Bug 49461 [preferences] code formatter not configured with Java project options
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitEditor.java
/** 
	 * Text operation code for requesting correction assist to show correction
	 * proposals for the current position. 
	 */
	public static final int CORRECTIONASSIST_PROPOSALS= 50;
	/** 
	 * Text operation code for requesting common prefix completion. 
	 */
	public static final int CONTENTASSIST_COMPLETE_PREFIX= 60;
	
	interface ITextConverter {
		void customizeDocumentCommand(IDocument document, DocumentCommand command);
	}
	
	class AdaptedSourceViewer extends JavaSourceViewer  {