class_docstr: Abstract base class for protocol messages.
  
  Protocol message classes are almost always generated by the protocol
  compiler.  These generated types subclass Message and implement the methods
  shown below.
docstr: Mark this as present in the parent.
  
  This normally happens automatically when you assign a field of a
  sub-message, but sometimes you want to make the sub-message
  present while keeping it empty.  If you find yourself using this,
  you may want to reconsider your design.
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code: def SetInParent(self):
      """Mark this as present in the parent.
  
      This normally happens automatically when you assign a field of a
      sub-message, but sometimes you want to make the sub-message
      present while keeping it empty.  If you find yourself using this,
      you may want to reconsider your design.
      """
      raise NotImplementedError
  
label_desc: Use image node_id 10 for calling the Message obj's underlying member method code with example usage: obj.SetInParent() without return types