Convert Lambda to Method Group when possible #49

Replace a simple lambda expression that only invokes a method that has a
compatible signature with the method itself
Right I will add the test.
I would like also, if possible, someone could give me some code that shows this scenario?
Some ArgumentList's argument with a expression different than a Identifier Name.
All this in the SimpleLambdaExpression Syntax.
And I will add that to the UTs also.