Yes, I changed mind after seeing that PHP doesn't support this by default.

While seemingly nice to have, this feature has side effects. First, it has to call the getter method before knowing the result is a Closure and can be called. Second, it could interfere with behaviors. For example, if you have `getXyz()` in the main object and `xyz()` in a behavior, then `getXyz()` will be called even if it doesn't return a Closure. Or if it returns a Closure, it would make calling `xyz()` of the behavior impossible.

For BC reason, we will still keep the support for calling Closure returned by a getter.