code: def unify(self, t):
      return isinstance(t, NatLiteral) and t.n == self.n
  
file_path: hail/hail/python/hail/expr/nat.py
imports: import abc
label_desc: Use image node_id 3 for calling the NatLiteral obj's underlying member method code with example usage: obj.unify(t) and returns: unknown