Is it possible to get the caller object of a closure in groovy?

Question

Is it possible to get a reference of the Object that invoked a Closure in the Closure's execution context?

For example:

public class Example {

    public Example(){
        def a = {return this};
        def b = [];

        b.metaClass.a = a;

        println b.a();
    }
}

I want this execution to return b instead of an instance of Example.

Answer 1

The object that the closure is invoked on can be referenced as delegate. Example:

def a = { return delegate }
def b = []

b.metaClass.a = a

assert b.a() == b