Computes the given attributed parameter using the corresponding @before modifier.
This overload tries to invoke the given function as a member of the ctx
parameter. It also supports accessing private member functions using the
PrivateAccessProxy mixin.
Computes the given attributed parameter using the corresponding @before modifier.
This overload tries to invoke the given function as a member of the ctx parameter. It also supports accessing private member functions using the PrivateAccessProxy mixin.