Documentation for method
CALL-ME assembled from the following types:
method CALL-ME(Callable : |arguments)
This method is required for postfix:«( )» and postfix:«.( )». It's what makes an object actually call-able and needs to be overloaded to let a given object act like a routine. If the object needs to be stored in a
&-sigiled container, is has to implement Callable.
does Callablemy = A;say a(); # OUTPUT: «called␤»