code: def merge_usages(cls, lhs_usage, rhs_usage):
      if lhs_usage is None:
          return rhs_usage
      if rhs_usage is None:
          return lhs_usage
      if lhs_usage == rhs_usage:
          return lhs_usage
      return cls.WITH_AND_WITHOUT_STEMS
  
imports: from __future__ import unicode_literals
  from enum import Enum, unique
label_desc: Use image node_id 1 for calling the CustomEntityParserUsage obj's underlying member method code with example usage: obj.merge_usages(cls, lhs_usage, rhs_usage) and returns: cls, rhs_usage, lhs_usage, lhs_usage