return new ASTData(unit, true, fPrefernces);
return new ASTData(unit, true, fPreferences);
	private ASTData getASTData(ICompilationUnit unit) throws JavaModelException {		if (fSource.unit.equals(unit))			return fSource;		if (fTarget.unit.equals(unit))			return fTarget;		return new ASTData(unit, true, fPrefernces);	}