code: def test_requires_nonnegative_max_outputs(self):
      self.skipTest("summary V1 pb does not actually enforce this")
  
imports: import glob
  import os
  import numpy
  import tensorflow
  from tensorboard.compat import tf2
  from tensorboard.compat.proto import summary_pb2
  from tensorboard.plugins.image import metadata
  from tensorboard.plugins.image import summary
label_desc: Use image node_id 3 for calling the SummaryV1PbTest obj's underlying member method code with example usage: obj.test_requires_nonnegative_max_outputs() without return types