fDocument.replace(9, 2, null);
fDocument.replace(9, 2, "");
	public void testJoinPartition3() {		try {						fDocument.replace(9, 2, null);			//	"xxx\n/*xxx\nxxx\n/**xxx*/\nxxx\n/**/\nxxx\n/***/\nxxx"						assertTrue(fDocumentPartitioningChanged);						ITypedRegion[] result= fDocument.computePartitioning(0, fDocument.getLength());			TypedRegion[] expectation= {				new TypedRegion(0,  4, IDocument.DEFAULT_CONTENT_TYPE),				new TypedRegion(4,  18, IJavaPartitions.JAVA_MULTI_LINE_COMMENT),				new TypedRegion(22, 5, IDocument.DEFAULT_CONTENT_TYPE),				new TypedRegion(27, 4, IJavaPartitions.JAVA_MULTI_LINE_COMMENT),				new TypedRegion(31, 5, IDocument.DEFAULT_CONTENT_TYPE),				new TypedRegion(36, 5, IJavaPartitions.JAVA_DOC),				new TypedRegion(41, 4, IDocument.DEFAULT_CONTENT_TYPE)			};						checkPartitioning(expectation, result);		} catch (BadLocationException x) {			assertTrue(false);		}	}