is it possible synchronized(null) ? i.e NO-OP

[mw]

Hi,

I haven't tried, but can I do:

```
void foo(lots of params) {
   Object lock = (a particular condition) ? realLock : null;

   synchronized(lock) {
     // lots of complex code block here
   }

}
```

i.e depending on a a particular condition, the complex code block 
either need to be sync-protected, or not needed.

Method foo has lots of params, I try to avoid refactor the inner 
code block into a separate method.

So my question: is it possible synchronized(null)? essentially 
means NO-OP.

If it's not currently supported, can we add such feature?

Thank.