class_docstr: IdentityRegion is designed to implement a dummy region that returns the input
  as the output.
code: def getOutputElementCount(self, name):
      if name == "out":
          return self._dataWidth
      else:
          raise Exception("Unrecognized output: " + name)
  
file_path: nupic-legacy/examples/network/custom_region/identity_region.py
imports: from nupic.bindings.regions.PyRegion import PyRegion
label_desc: Use image node_id 5 for calling the IdentityRegion obj's underlying member method code with example usage: obj.getOutputElementCount(name) and returns: self