class_docstr: Class for the copy builtin message function.
  
  See Also
  --------
  copy_u
class_docstr_tok: ["Class","for","the","copy","builtin","message","function",".","See","Also","--","--","--","--","copy_u"]
code: def name(self):
      return "copy_{}".format(TargetCode.CODE2STR[self.target])
  
file_path: dgl/python/dgl/function/message.py
imports: from __future__ import absolute_import
  import sys
  from itertools import product
  from .base import BuiltinFunction, TargetCode
label_desc: Use image node_id 2 for calling the CopyMessageFunction obj's underlying member method code with example usage: obj.name() and returns: str