fDocument.replace(5, 2, null);
fDocument.replace(5, 2, "");
	public void testRemovePartition2() {				testJoinPartition3();		fDocumentPartitioningChanged= false;				try {						fDocument.replace(5, 2, null);			//	"xxx\nxxx\nxxx\n/**xxx*/\nxxx\n/**/\nxxx\n/***/\nxxx"						assertTrue(fDocumentPartitioningChanged);						ITypedRegion[] result= fDocument.computePartitioning(0, fDocument.getLength());			TypedRegion[] expectation= {				new TypedRegion(0,  12, IDocument.DEFAULT_CONTENT_TYPE),				new TypedRegion(12,  8, IJavaPartitions.JAVA_DOC),				new TypedRegion(20, 5, IDocument.DEFAULT_CONTENT_TYPE),				new TypedRegion(25, 4, IJavaPartitions.JAVA_MULTI_LINE_COMMENT),				new TypedRegion(29, 5, IDocument.DEFAULT_CONTENT_TYPE),				new TypedRegion(34, 5, IJavaPartitions.JAVA_DOC),				new TypedRegion(39, 4, IDocument.DEFAULT_CONTENT_TYPE)			};						checkPartitioning(expectation, result);		} catch (BadLocationException x) {			assertTrue(false);		}	}