class_docstr: A GenomicsReader that produces consecutive integers.
code: def __init__(self, input_path):
      self.limit = int(input_path)
      super(DummyReader, self).__init__()
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from absl.testing import absltest
  import six
  from third_party.nucleus.io import genomics_reader
  from third_party.nucleus.protos import gff_pb2
  from third_party.nucleus.testing import test_utils
label_desc: Use image node_id 1 to create a new DummyReader object from inherited base classes: genomics_reader with example: obj = DummyReader(input_path)