code: def _generate_name(layer):
      return ""
  
file_path: MMdnn/mmdnn/conversion/onnx/onnx_graph.py
imports: from mmdnn.conversion.common.DataStructure.graph import GraphNode, Graph
  from onnx import onnx_pb2
label_desc: Use image node_id 1 for calling the ONNXGraph obj's underlying member method code with example usage: obj._generate_name(layer) and returns: str