code: def gen_code(self, phase):
      raise NotImplementedError("do not use base emitter class.")
  
file_path: MMdnn/mmdnn/conversion/common/DataStructure/emitter.py
imports: from six import string_types
  import mmdnn.conversion.common.IR.graph_pb2
  from mmdnn.conversion.common.IR.graph_pb2 import NodeDef, GraphDef, DataType
label_desc: Use image node_id 7 for calling the Emitter obj's underlying member method code with example usage: obj.gen_code(phase) without return types