PDFBOX-6049: improve naming

git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1927690 13f79535-47bb-0310-9956-ffa450edef68

Author: THausherr

pdfbox/src/main/java/org/apache/pdfbox/multipdf/Overlay.java

@@ -269,7 +269,7 @@ private void loadPDFs() throws IOException
         }
         if (allPagesOverlay != null)
         {
-            specificPageOverlayLayoutPageMap = getLayoutPages(allPagesOverlay);
+            specificPageOverlayLayoutPageMap = createPageOverlayLayoutPageMap(allPagesOverlay);
             useAllOverlayPages = true;
             numberOfOverlayPages = specificPageOverlayLayoutPageMap.size();
         }
@@ -286,14 +286,14 @@ private PDDocument loadPDF(String pdfName) throws IOException
     private static final class LayoutPage
     {
         private final PDRectangle overlayMediaBox;
-        private final COSStream overlayContentStream;
+        private final COSStream overlayCOSStream;
         private final COSDictionary overlayResources;
         private final short overlayRotation;
 
         private LayoutPage(PDRectangle mediaBox, COSStream contentStream, COSDictionary resources, short rotation)
         {
             overlayMediaBox = mediaBox;
-            overlayContentStream = contentStream;
+            overlayCOSStream = contentStream;
             overlayResources = resources;
             overlayRotation = rotation;
         }
@@ -329,7 +329,7 @@ private LayoutPage createLayoutPage(PDPage page) throws IOException
                 resources.getCOSObject(), (short) page.getRotation());
     }
 
-    private Map<Integer,LayoutPage> getLayoutPages(PDDocument doc) throws IOException
+    private Map<Integer,LayoutPage> createPageOverlayLayoutPageMap(PDDocument doc) throws IOException
     {
         int i = 0;
         Map<Integer, LayoutPage> layoutPages = new HashMap<>();
@@ -506,7 +506,7 @@ else if (useAllOverlayPages)
     private PDFormXObject createOverlayFormXObject(LayoutPage layoutPage, PDFCloneUtility cloner)
             throws IOException
     {
-        PDFormXObject xobjForm = new PDFormXObject(layoutPage.overlayContentStream);
+        PDFormXObject xobjForm = new PDFormXObject(layoutPage.overlayCOSStream);
         xobjForm.setResources(new PDResources(
                 cloner.cloneForNewDocument(layoutPage.overlayResources)));
         xobjForm.setFormType(1);