(self)
return self
A subclass can define this as a hook for optimizations.

        Returns either self or another node with the same effect.
A subclass can define this as a hook for optimizations.
A subclass can define this as a hook for optimizations .
def optimize(self):
        """
        A subclass can define this as a hook for optimizations.

        Returns either self or another node with the same effect.
        """
        return self
def optimize ( self ) : return self