return methodGen.getName().toLowerCase().indexOf("lock") == -1
return methodGen != null && methodGen.getName().toLowerCase().indexOf("lock") == -1
	public boolean prescreen(ClassContext classContext, Method method) {		BitSet bytecodeSet = classContext.getBytecodeSet(method);		MethodGen methodGen = classContext.getMethodGen(method);		return methodGen.getName().toLowerCase().indexOf("lock") == -1			&& (bytecodeSet.get(Constants.INVOKEVIRTUAL) 			   || bytecodeSet.get(Constants.INVOKEINTERFACE));	}