code: def getModelIDFromParamsHash(self, paramsHash):
      
      entryIdx = self. _paramsHashToIndexes.get(paramsHash, None)
      if entryIdx is not None:
        return self._allResults[entryIdx]['modelID']
      else:
        return None
docs: Return the modelID of the model with the given paramsHash, or
      None if not found.
  
      Parameters:
      ---------------------------------------------------------------------
      paramsHash:  paramsHash to look for
      retval:      modelId, or None if not found