added an annotation '@Internal' to mark program elements intended for POI internal use only, marked all public accessors to OOXML xmlbeans as @Internal

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@886846 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/poi/util/Internal.java

@@ -0,0 +1,37 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.poi.util;
+
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Retention;
+import java.lang.annotation.Documented;
+
+
+/**
+ * Program elements annotated @Internal are intended for
+ * POI internal use only. Such elements are not public by design
+ * and likely to be removed in future versions of POI  or access
+ * to such elements will be changed from 'public' to 'default' or less.
+ *
+ * @author Yegor Kozlov
+ * @since POI-3.6
+ */
+@Documented
+@Retention(RetentionPolicy.SOURCE)
+public @interface Internal {
+
+}

src/ooxml/java/org/apache/poi/xslf/XSLFSlideShow.java

@@ -21,6 +21,7 @@ import java.util.LinkedList;
 import java.util.List;
 
 import org.apache.poi.POIXMLDocument;
+import org.apache.poi.util.Internal;
 import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
 import org.apache.poi.openxml4j.exceptions.OpenXML4JException;
 import org.apache.poi.openxml4j.opc.OPCPackage;
@@ -93,6 +94,7 @@ public class XSLFSlideShow extends POIXMLDocument {
 	/**
 	 * Returns the low level presentation base object
 	 */
+    @Internal
 	public CTPresentation getPresentation() {
 		return presentationDoc.getPresentation();
 	}
@@ -103,6 +105,7 @@ public class XSLFSlideShow extends POIXMLDocument {
 	 * You'll need these to figure out the slide ordering,
 	 *  and to get at the actual slides themselves
 	 */
+    @Internal
 	public CTSlideIdList getSlideReferences() {
 		return getPresentation().getSldIdLst();
 	}
@@ -112,6 +115,7 @@ public class XSLFSlideShow extends POIXMLDocument {
 	 * You'll need these to get at the actual slide 
 	 *  masters themselves
 	 */
+    @Internal
 	public CTSlideMasterIdList getSlideMasterReferences() {
 		return getPresentation().getSldMasterIdLst();
 	}
@@ -129,6 +133,7 @@ public class XSLFSlideShow extends POIXMLDocument {
 	 * Returns the low level slide master object from
 	 *  the supplied slide master reference
 	 */
+    @Internal
 	public CTSlideMaster getSlideMaster(CTSlideMasterIdListEntry master) throws IOException, XmlException {
 		PackagePart masterPart = getSlideMasterPart(master);
 		SldMasterDocument masterDoc =
@@ -149,6 +154,7 @@ public class XSLFSlideShow extends POIXMLDocument {
 	 * Returns the low level slide object from
 	 *  the supplied slide reference
 	 */
+    @Internal
 	public CTSlide getSlide(CTSlideIdListEntry slide) throws IOException, XmlException {
 		PackagePart slidePart = getSlidePart(slide);
 		SldDocument slideDoc =
@@ -188,6 +194,7 @@ public class XSLFSlideShow extends POIXMLDocument {
 	 * Returns the low level notes object for the given
 	 *  slide, as found from the supplied slide reference
 	 */
+    @Internal
 	public CTNotesSlide getNotes(CTSlideIdListEntry slide) throws IOException, XmlException {
 		PackagePart notesPart = getNodesPart(slide);
 		if(notesPart == null)
@@ -202,6 +209,7 @@ public class XSLFSlideShow extends POIXMLDocument {
 	/**
 	 * Returns all the comments for the given slide
 	 */
+    @Internal
 	public CTCommentList getSlideComments(CTSlideIdListEntry slide) throws IOException, XmlException {
 		PackageRelationshipCollection commentRels;
 		PackagePart slidePart = getSlidePart(slide);

src/ooxml/java/org/apache/poi/xslf/usermodel/XSLFSlide.java

@@ -19,6 +19,7 @@ package org.apache.poi.xslf.usermodel;
 import org.apache.poi.sl.usermodel.Notes;
 import org.apache.poi.sl.usermodel.Slide;
 import org.apache.poi.sl.usermodel.SlideShow;
+import org.apache.poi.util.Internal;
 import org.openxmlformats.schemas.presentationml.x2006.main.CTSlide;
 import org.openxmlformats.schemas.presentationml.x2006.main.CTSlideIdListEntry;
 
@@ -35,12 +36,14 @@ public class XSLFSlide extends XSLFSheet implements Slide {
 	/**
 	 * While developing only!
 	 */
+    @Internal
 	public CTSlide _getCTSlide() {
 		return slide;
 	}
 	/**
 	 * While developing only!
 	 */
+    @Internal
 	public CTSlideIdListEntry _getCTSlideId() {
 		return slideId;
 	}

src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFCell.java

@@ -40,6 +40,7 @@ import org.apache.poi.ss.usermodel.RichTextString;
 import org.apache.poi.ss.util.CellReference;
 import org.apache.poi.xssf.model.SharedStringsTable;
 import org.apache.poi.xssf.model.StylesTable;
+import org.apache.poi.util.Internal;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTCell;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTCellFormula;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.STCellFormulaType;
@@ -851,6 +852,7 @@ public final class XSSFCell implements Cell {
      *
      * @return the xml bean containing information about this cell
      */
+    @Internal
     public CTCell getCTCell(){
         return _cell;
     }

src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFCellStyle.java

@@ -29,6 +29,7 @@ import org.apache.poi.xssf.usermodel.extensions.XSSFCellAlignment;
 import org.apache.poi.xssf.usermodel.extensions.XSSFCellBorder;
 import org.apache.poi.xssf.usermodel.extensions.XSSFCellFill;
 import org.apache.poi.xssf.usermodel.extensions.XSSFCellBorder.BorderSide;
+import org.apache.poi.util.Internal;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTBorder;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTBorderPr;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTCellAlignment;
@@ -74,6 +75,7 @@ public class XSSFCellStyle implements CellStyle {
     /**
      * Used so that StylesSource can figure out our location
      */
+    @Internal
     public CTXf getCoreXf() {
         return _cellXf;
     }
@@ -81,6 +83,7 @@ public class XSSFCellStyle implements CellStyle {
     /**
      * Used so that StylesSource can figure out our location
      */
+    @Internal
     public CTXf getStyleXf() {
         return _cellStyleXf;
     }

src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFChildAnchor.java

@@ -20,6 +20,7 @@ package org.apache.poi.xssf.usermodel;
 import org.openxmlformats.schemas.drawingml.x2006.main.CTPoint2D;
 import org.openxmlformats.schemas.drawingml.x2006.main.CTPositiveSize2D;
 import org.openxmlformats.schemas.drawingml.x2006.main.CTTransform2D;
+import org.apache.poi.util.Internal;
 
 /**
  * @author Yegor Kozlov
@@ -44,6 +45,7 @@ public final class XSSFChildAnchor extends XSSFAnchor {
         this.t2d = t2d;
     }
 
+    @Internal
     public CTTransform2D getCTTransform2D() {
         return t2d;
     }

src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFClientAnchor.java

@@ -18,6 +18,7 @@
 package org.apache.poi.xssf.usermodel;
 
 import org.apache.poi.ss.usermodel.ClientAnchor;
+import org.apache.poi.util.Internal;
 import org.openxmlformats.schemas.drawingml.x2006.spreadsheetDrawing.CTMarker;
 
 /**
@@ -175,6 +176,7 @@ public final class XSSFClientAnchor extends XSSFAnchor implements ClientAnchor {
      *
      * @return starting anchor point
      */
+    @Internal
     public CTMarker getFrom(){
         return cell1;
     }
@@ -188,6 +190,7 @@ public final class XSSFClientAnchor extends XSSFAnchor implements ClientAnchor {
      *
      * @return ending anchor point
      */
+    @Internal
     public CTMarker getTo(){
         return cell2;
     }

src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFColor.java

@@ -17,6 +17,7 @@
 package org.apache.poi.xssf.usermodel;
 
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTColor;
+import org.apache.poi.util.Internal;
 
 /**
  * Represents a color in SpreadsheetML
@@ -197,6 +198,7 @@ public class XSSFColor {
      *
      * @return the underlying XML bean
      */
+    @Internal
     public CTColor getCTColor(){
         return ctColor;
     }

src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFConnector.java

@@ -32,6 +32,7 @@ import org.openxmlformats.schemas.drawingml.x2006.main.STSchemeColorVal;
 import org.openxmlformats.schemas.drawingml.x2006.main.STShapeType;
 import org.openxmlformats.schemas.drawingml.x2006.spreadsheetDrawing.CTConnector;
 import org.openxmlformats.schemas.drawingml.x2006.spreadsheetDrawing.CTConnectorNonVisual;
+import org.apache.poi.util.Internal;
 
 /**
  * A connection shape drawing element. A connection shape is a line, etc.
@@ -104,6 +105,7 @@ public final class XSSFConnector extends XSSFShape {
         return prototype;
     }
 
+    @Internal
     public CTConnector getCTConnector(){
         return ctShape;
     }

src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFDrawing.java

@@ -25,6 +25,7 @@ import java.util.Map;
 import javax.xml.namespace.QName;
 
 import org.apache.poi.POIXMLDocumentPart;
+import org.apache.poi.util.Internal;
 import org.apache.poi.xssf.model.CommentsTable;
 import org.apache.poi.openxml4j.opc.PackagePart;
 import org.apache.poi.openxml4j.opc.PackagePartName;
@@ -93,6 +94,7 @@ public final class XSSFDrawing extends POIXMLDocumentPart implements Drawing {
      *
      * @return the underlying CTDrawing bean
      */
+    @Internal
     public CTDrawing getCTDrawing(){
         return drawing;
     }

src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFFont.java

@@ -17,6 +17,7 @@
 package org.apache.poi.xssf.usermodel;
 
 import org.apache.poi.POIXMLException;
+import org.apache.poi.util.Internal;
 import org.apache.poi.ss.usermodel.Font;
 import org.apache.poi.ss.usermodel.FontCharset;
 import org.apache.poi.ss.usermodel.FontFamily;
@@ -88,6 +89,7 @@ public class XSSFFont implements Font {
     /**
      * get the underlying CTFont font
      */
+    @Internal
     public CTFont getCTFont() {
         return _ctFont;
     }

src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFMap.java

@@ -21,6 +21,7 @@ import java.util.List;
 import java.util.Vector;
 
 import org.apache.poi.POIXMLDocumentPart;
+import org.apache.poi.util.Internal;
 import org.apache.poi.xssf.model.MapInfo;
 import org.apache.poi.xssf.model.SingleXmlCells;
 import org.apache.poi.xssf.model.Table;
@@ -53,11 +54,13 @@ public class XSSFMap {
     }
 
 
+    @Internal
     public CTMap getCtMap() {
         return ctMap;
     }
 
 
+    @Internal
     public CTSchema getCTSchema() {
         String schemaId = ctMap.getSchemaID();
         return mapInfo.getCTSchemaById(schemaId);

src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFPicture.java

@@ -34,6 +34,7 @@ import org.apache.poi.ss.usermodel.Workbook;
 import org.apache.poi.ss.util.ImageUtils;
 import org.apache.poi.util.POILogFactory;
 import org.apache.poi.util.POILogger;
+import org.apache.poi.util.Internal;
 import org.openxmlformats.schemas.drawingml.x2006.main.CTBlipFillProperties;
 import org.openxmlformats.schemas.drawingml.x2006.main.CTNonVisualDrawingProps;
 import org.openxmlformats.schemas.drawingml.x2006.main.CTNonVisualPictureProperties;
@@ -141,6 +142,7 @@ public final class XSSFPicture extends XSSFShape implements Picture {
      *
      * @return the underlying CTPicture bean
      */
+    @Internal
     public CTPicture getCTPicture(){
         return ctPicture;
     }

src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFRichTextString.java

@@ -24,6 +24,7 @@ import javax.xml.namespace.QName;
 import org.apache.poi.ss.usermodel.Font;
 import org.apache.poi.ss.usermodel.RichTextString;
 import org.apache.poi.xssf.model.StylesTable;
+import org.apache.poi.util.Internal;
 import org.apache.xmlbeans.XmlCursor;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTColor;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTFont;
@@ -416,6 +417,7 @@ public class XSSFRichTextString implements RichTextString {
     /**
      * Return the underlying xml bean
      */
+    @Internal
     public CTRst getCTRst() {
         return st;
     }

src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFRow.java

@@ -27,6 +27,7 @@ import org.apache.poi.ss.usermodel.Row;
 import org.apache.poi.ss.util.CellReference;
 import org.apache.poi.util.POILogFactory;
 import org.apache.poi.util.POILogger;
+import org.apache.poi.util.Internal;
 import org.apache.poi.xssf.model.CalculationChain;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTCell;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTRow;
@@ -368,6 +369,7 @@ public class XSSFRow implements Row, Comparable<XSSFRow> {
      *
      * @return the underlying CTRow xml bean
      */
+    @Internal
     public CTRow getCTRow(){
     	return _row;
     }

src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFShapeGroup.java

@@ -18,6 +18,7 @@
 package org.apache.poi.xssf.usermodel;
 
 import org.apache.poi.openxml4j.opc.PackageRelationship;
+import org.apache.poi.util.Internal;
 import org.openxmlformats.schemas.drawingml.x2006.main.CTGroupShapeProperties;
 import org.openxmlformats.schemas.drawingml.x2006.main.CTGroupTransform2D;
 import org.openxmlformats.schemas.drawingml.x2006.main.CTNonVisualDrawingProps;
@@ -163,6 +164,7 @@ public final class XSSFShapeGroup extends XSSFShape {
         return shape;
     }
 
+    @Internal
     public CTGroupShape getCTGroupShape() {
         return ctGroup;
     }

src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFSheet.java

@@ -49,6 +49,7 @@ import org.apache.poi.ss.util.CellRangeAddress;
 import org.apache.poi.ss.util.CellReference;
 import org.apache.poi.util.POILogFactory;
 import org.apache.poi.util.POILogger;
+import org.apache.poi.util.Internal;
 import org.apache.poi.xssf.model.CommentsTable;
 import org.apache.poi.xssf.usermodel.helpers.ColumnHelper;
 import org.apache.poi.xssf.usermodel.helpers.XSSFRowShifter;
@@ -218,6 +219,7 @@ public class XSSFSheet extends POIXMLDocumentPart implements Sheet {
      *
      * @return the CTWorksheet bean holding this sheet's data
      */
+    @Internal
     public CTWorksheet getCTWorksheet() {
         return this.worksheet;
     }

src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFSimpleShape.java

@@ -42,6 +42,7 @@ import org.openxmlformats.schemas.drawingml.x2006.spreadsheetDrawing.CTShape;
 import org.openxmlformats.schemas.drawingml.x2006.spreadsheetDrawing.CTShapeNonVisual;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTRElt;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTRPrElt;
+import org.apache.poi.util.Internal;
 
 /**
  * Represents a shape with a predefined geometry in a SpreadsheetML drawing.
@@ -126,6 +127,7 @@ public class XSSFSimpleShape extends XSSFShape { // TODO - instantiable supercla
         return prototype;
     }
 
+    @Internal
     public CTShape getCTShape(){
         return ctShape;
     }

src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFWorkbook.java

@@ -51,10 +51,7 @@ import org.apache.poi.ss.usermodel.Sheet;
 import org.apache.poi.ss.usermodel.Workbook;
 import org.apache.poi.ss.usermodel.Row.MissingCellPolicy;
 import org.apache.poi.ss.util.CellReference;
-import org.apache.poi.util.IOUtils;
-import org.apache.poi.util.POILogFactory;
-import org.apache.poi.util.POILogger;
-import org.apache.poi.util.PackageHelper;
+import org.apache.poi.util.*;
 import org.apache.poi.xssf.model.CalculationChain;
 import org.apache.poi.xssf.model.MapInfo;
 import org.apache.poi.xssf.model.SharedStringsTable;
@@ -290,6 +287,7 @@ public class XSSFWorkbook extends POIXMLDocument implements Workbook, Iterable<X
      *
      * @return the underlying CTWorkbook bean
      */
+    @Internal
     public CTWorkbook getCTWorkbook() {
         return this.workbook;
     }
@@ -1180,6 +1178,7 @@ public class XSSFWorkbook extends POIXMLDocument implements Workbook, Iterable<X
      *
      * @return the shared string table
      */
+    @Internal
     public SharedStringsTable getSharedStringSource() {
         return this.sharedStringSource;
     }
@@ -1351,6 +1350,7 @@ public class XSSFWorkbook extends POIXMLDocument implements Workbook, Iterable<X
      *
      * @return the <code>CalculationChain</code> object or <code>null</code> if not defined
      */
+    @Internal
     public CalculationChain getCalculationChain(){
         return calcChain;
     }
@@ -1367,6 +1367,7 @@ public class XSSFWorkbook extends POIXMLDocument implements Workbook, Iterable<X
      *
      * @return the helper class used to query the custom XML mapping defined in this workbook
      */
+    @Internal
     public MapInfo getMapInfo(){
     	return mapInfo;
     }

src/ooxml/java/org/apache/poi/xssf/usermodel/extensions/XSSFCellAlignment.java

@@ -21,6 +21,7 @@ import org.openxmlformats.schemas.spreadsheetml.x2006.main.STHorizontalAlignment
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.STVerticalAlignment;
 import org.apache.poi.ss.usermodel.HorizontalAlignment;
 import org.apache.poi.ss.usermodel.VerticalAlignment;
+import org.apache.poi.util.Internal;
 
 
 /**
@@ -160,6 +161,7 @@ public class XSSFCellAlignment {
     /**
      * Access to low-level data
      */
+    @Internal
     public CTCellAlignment getCTCellAlignment() {
         return cellAlignement;
     }

src/ooxml/java/org/apache/poi/xssf/usermodel/extensions/XSSFCellBorder.java

@@ -19,6 +19,7 @@ package org.apache.poi.xssf.usermodel.extensions;
 
 import org.apache.poi.ss.usermodel.BorderStyle;
 import org.apache.poi.xssf.usermodel.XSSFColor;
+import org.apache.poi.util.Internal;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTBorder;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTBorderPr;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.STBorderStyle;
@@ -59,6 +60,7 @@ public class XSSFCellBorder {
      *
      * @return CTBorder
      */
+    @Internal
     public CTBorder getCTBorder() {
         return border;
     }

src/ooxml/java/org/apache/poi/xssf/usermodel/extensions/XSSFCellFill.java

@@ -21,6 +21,7 @@ import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTFill;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTPatternFill;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.STPatternType;
 import org.apache.poi.xssf.usermodel.XSSFColor;
+import org.apache.poi.util.Internal;
 
 /**
  * This element specifies fill formatting.
@@ -147,6 +148,7 @@ public final class XSSFCellFill {
      *
      * @return CTFill
      */
+    @Internal
     public CTFill getCTFill() {
         return _fill;
     }

src/ooxml/java/org/apache/poi/xssf/usermodel/extensions/XSSFHeaderFooter.java

@@ -19,6 +19,7 @@ package org.apache.poi.xssf.usermodel.extensions;
 
 import org.apache.poi.ss.usermodel.HeaderFooter;
 import org.apache.poi.xssf.usermodel.helpers.HeaderFooterHelper;
+import org.apache.poi.util.Internal;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTHeaderFooter;
 
 /**
@@ -140,6 +141,7 @@ public abstract class XSSFHeaderFooter implements HeaderFooter {
 	 *
 	 * @return the underlying CTHeaderFooter xml bean
 	 */
+    @Internal
 	public CTHeaderFooter getHeaderFooter() {
 		return this.headerFooter;
 	}

src/ooxml/java/org/apache/poi/xwpf/usermodel/TOC.java

@@ -1,8 +1,25 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You under the Apache License, Version 2.0
+   (the "License"); you may not use this file except in compliance with
+   the License.  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+==================================================================== */
 package org.apache.poi.xwpf.usermodel;
 
 import java.math.BigInteger;
 
 import org.apache.xmlbeans.impl.xb.xmlschema.SpaceAttribute.Space;
+import org.apache.poi.util.Internal;
 import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTDecimalNumber;
 import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTFonts;
 import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTP;
@@ -56,7 +73,8 @@ public class TOC {
 		p.addNewR().addNewT().set("Table of Contents");
 	}
 
-	public CTSdtBlock getBlock() {
+    @Internal
+    public CTSdtBlock getBlock() {
 		return this.block;
 	}
 

src/ooxml/java/org/apache/poi/xwpf/usermodel/XWPFDocument.java

@@ -43,6 +43,7 @@ import org.apache.poi.openxml4j.opc.PackageRelationshipTypes;
 import org.apache.poi.openxml4j.opc.PackagingURIHelper;
 import org.apache.poi.openxml4j.opc.TargetMode;
 import org.apache.poi.util.PackageHelper;
+import org.apache.poi.util.Internal;
 import org.apache.poi.xwpf.model.XWPFHeaderFooterPolicy;
 import org.apache.xmlbeans.XmlException;
 import org.apache.xmlbeans.XmlOptions;
@@ -231,6 +232,7 @@ public class XWPFDocument extends POIXMLDocument {
     /**
      * Returns the low level document base object
      */
+    @Internal
     public CTDocument1 getDocument() {
         return ctDocument;
     }
@@ -321,6 +323,7 @@ public class XWPFDocument extends POIXMLDocument {
     /**
      * Returns the styles object used
      */
+    @Internal
     public CTStyles getStyle() throws XmlException, IOException {
         PackagePart[] parts;
         try {

src/ooxml/java/org/apache/poi/xwpf/usermodel/XWPFHeaderFooter.java

@@ -19,6 +19,7 @@ package org.apache.poi.xwpf.usermodel;
 import java.io.IOException;
 
 import org.apache.poi.POIXMLDocumentPart;
+import org.apache.poi.util.Internal;
 import org.apache.poi.openxml4j.opc.PackagePart;
 import org.apache.poi.openxml4j.opc.PackageRelationship;
 import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTHdrFtr;
@@ -40,6 +41,7 @@ public abstract class XWPFHeaderFooter extends POIXMLDocumentPart{
 		super(part, rel);
 	}
 	
+    @Internal
 	public CTHdrFtr _getHdrFtr() {
 		return headerFooter;
 	}

src/ooxml/java/org/apache/poi/xwpf/usermodel/XWPFParagraph.java

@@ -22,6 +22,7 @@ import java.util.Arrays;
 
 import org.apache.xmlbeans.XmlCursor;
 import org.apache.xmlbeans.XmlObject;
+import org.apache.poi.util.Internal;
 import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTBorder;
 import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTFtnEdnRef;
 import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTInd;
@@ -149,6 +150,7 @@ public class XWPFParagraph {
         }
     }
 
+    @Internal
     public CTP getCTP() {
         return paragraph;
     }

src/ooxml/java/org/apache/poi/xwpf/usermodel/XWPFRun.java

@@ -33,6 +33,7 @@ import org.openxmlformats.schemas.wordprocessingml.x2006.main.STBrType;
 import org.openxmlformats.schemas.wordprocessingml.x2006.main.STOnOff;
 import org.openxmlformats.schemas.wordprocessingml.x2006.main.STUnderline;
 import org.openxmlformats.schemas.wordprocessingml.x2006.main.STVerticalAlignRun;
+import org.apache.poi.util.Internal;
 
 /**
  * XWPFRun object defines a region of text with a common set of properties
@@ -56,6 +57,7 @@ public class XWPFRun {
      * Get the currently used CTR object
      * @return ctr object
      */
+    @Internal
     public CTR getCTR() {
         return run;
     }

src/ooxml/java/org/apache/poi/xwpf/usermodel/XWPFTable.java

@@ -27,6 +27,7 @@ import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTTblWidth;
 import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTTc;
 import org.openxmlformats.schemas.wordprocessingml.x2006.main.STBorder;
 import org.openxmlformats.schemas.wordprocessingml.x2006.main.STTblWidth;
+import org.apache.poi.util.Internal;
 
 /**
  * Sketch of XWPFTable class. Only table's text is being hold.
@@ -109,6 +110,7 @@ public class XWPFTable {
     /**
      * @return ctTbl object
      */
+    @Internal
     public CTTbl getCTTbl() {
         return ctTbl;
     }

src/ooxml/java/org/apache/poi/xwpf/usermodel/XWPFTableCell.java

@@ -18,6 +18,7 @@ package org.apache.poi.xwpf.usermodel;
 
 import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTP;
 import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTTc;
+import org.apache.poi.util.Internal;
 
 
 public class XWPFTableCell {
@@ -34,6 +35,7 @@ public class XWPFTableCell {
     }
 
 
+    @Internal
     public CTTc getCTTc() {
         return ctTc;
     }

src/ooxml/java/org/apache/poi/xwpf/usermodel/XWPFTableRow.java

@@ -21,6 +21,7 @@ import java.math.BigInteger;
 import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTHeight;
 import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTRow;
 import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTTrPr;
+import org.apache.poi.util.Internal;
 
 
 /**
@@ -34,6 +35,7 @@ public class XWPFTableRow {
         this.ctRow = row;
     }
 
+    @Internal
     public CTRow getCtRow() {
         return ctRow;
     }