Rename PdfDocument#isSuccessClosing to closed.

Author: pavel-alay

kernel/src/main/java/com/itextpdf/kernel/pdf/PdfDocument.java

@@ -109,7 +109,7 @@ public class PdfDocument implements IEventDispatcher {
 
     protected boolean isClosing = false;
 
-    protected boolean isSuccessClosing = false;
+    protected boolean closed = false;
 
     /**
     * flag determines whether to write unused objects to result document
@@ -751,11 +751,11 @@ public void close() {
         } catch (IOException e) {
             throw new PdfException(PdfException.CannotCloseDocument, e, this);
         }
-        isSuccessClosing = true;
+        closed = true;
     }
 
-    public boolean isSuccessClosing() {
-        return isSuccessClosing;
+    public boolean isClosed() {
+        return closed;
     }
 
     public boolean isTagged() {
@@ -1253,7 +1253,7 @@ protected void flatFields() {
      * @throws PdfException
      */
     protected void checkClosingStatus(){
-        if(isSuccessClosing){
+        if(closed){
             throw  new PdfException(PdfException.DocumentClosedImpossibleExecuteAction);
         }
     }

layout/src/main/java/com/itextpdf/layout/Document.java

@@ -156,7 +156,7 @@ public PageSize rotatePage(PageSize pageSize) {
      * @throws PdfException
      */
     protected void checkClosingStatus(){
-        if(getPdfDocument().isSuccessClosing()){
+        if(getPdfDocument().isClosed()){
             throw  new PdfException(PdfException.DocumentClosedImpossibleExecuteAction);
         }
     }