Bug 74505 Indent Line removes tabs inside switch statement
I200409212000 Indent Line removes tabs inside switch statement. Test Case: 1. open ResourceFileBuffer rev. 1.16 2. select line 119 - 169 3. Indent Line ==> break and other statements get alligned to "switch"
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/JavaIndenter.java
*/
	private JavaHeuristicScanner fScanner;
	
	/**
	 * Creates a new instance.
	 * 
	 * @param document the document to scan
	 * @param scanner the {@link JavaHeuristicScanner} to be used for scanning
	 * the document. It must be installed on the same <code>IDocument</code>.
	 */
	public JavaIndenter(IDocument document, JavaHeuristicScanner scanner) {
		Assert.isNotNull(document);
		Assert.isNotNull(scanner);
		fDocument= document;
		fScanner= scanner;
	}
	
	/**
	 * Computes the indentation at the reference point of <code>position</code>.
	 * 
	 * @param offset the offset in the document
	 * @return a String which reflects the indentation at the line in which the
	 *         reference position to <code>offset</code> resides, or <code>null</code>
	 *         if it cannot be determined
	 */
	public StringBuffer getReferenceIndentation(int offset) {
		return getReferenceIndentation(offset, false);
	}
	
	/**