code: def scratch_size_of_expand_dims(self, op_def):
      output_dim_size = len(op_def.output_shape[0].dims)
      data_type_bytes = self.get_data_bytes(mace_pb2.DT_INT32)
      return output_dim_size * data_type_bytes
  
imports: from py_proto import mace_pb2
  from utils.config_parser import ModelKeys
  from utils.util import mace_check
  from transform.base_converter import MaceKeyword
  from transform.base_converter import MaceOp
label_desc: Use image node_id 7 for calling the ScratchComputer obj's underlying member method code with example usage: obj.scratch_size_of_expand_dims(op_def) and returns: unknown