Missing field completion in nested with closure

Consider this:

```groovy
package test48

class Test48 {
	String foobar
	
	void doSomething() {
		new Object().with {
			new Object().with { 
				foo|
			}
		}
	}
}
```

Invoke code assist at "|": `foobar` is not proposed. Please note it is if you are outside the inner `with` closure body.