class_docstr: The Benchmark class registrar.  Used by abstract Benchmark class.
code: def __new__(mcs, clsname, base, attrs):
      newclass = type.__new__(mcs, clsname, base, attrs)
      if not newclass.is_abstract():
          GLOBAL_BENCHMARK_REGISTRY.add(newclass)
      return newclass
  
imports: import math
  import numbers
  import os
  import re
  import sys
  import time
  import types
  from absl import app
  from tensorflow.core.protobuf import config_pb2
  from tensorflow.core.protobuf import rewriter_config_pb2
  from tensorflow.core.util import test_log_pb2
  from tensorflow.python.client import timeline
  from tensorflow.python.framework import ops
  from tensorflow.python.platform import gfile
  from tensorflow.python.platform import tf_logging
  from tensorflow.python.util import tf_inspect
  from tensorflow.python.util.tf_export import tf_export
label_desc: Use image node_id 1 for calling the _BenchmarkRegistrar obj's underlying member method code with example usage: obj.__new__(mcs, clsname, base, attrs) and returns: newclass