Method copy

projects/Python/proto/test.py:12229–12234

(self, other)

    # Struct shallow copy
    def copy(self, other):
        self.f1 = other.f1
        self.f2 = other.f2
        self.f3 = other.f3
        self.f4 = other.f4
        return self

    # Struct deep clone
    def clone(self):