code: def testRgbScreenMatchesSpec(self):
      obs = self._get_obs()
      self._check_layer(obs.render_data.map, 128, 124, 24)
  
imports: from absl.testing import absltest
  from absl.testing import parameterized
  import numpy
  from pysc2.lib import actions
  from pysc2.lib import features
  from pysc2.lib import point
  from pysc2.lib import units
  from pysc2.tests import dummy_observation
  from s2clientprotocol import common_pb2
label_desc: Use image node_id 4 for calling the DummyObservationTest obj's underlying member method code with example usage: obj.testRgbScreenMatchesSpec() without return types