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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def Pack(cls, obj, version):
 """Pack the given object using AdWords-specific logic. Args: obj: an object to be packed for SOAP using AdWords-specific logic, if applicable. version: the version of the current API, e.g. 'v201809' Returns: The given object packed with AdWords-specific logic for SOAP, if applicable. Otherwise, returns the given object unmodified. """

    if isinstance(obj, ServiceQuery):
      return str(obj)
    return obj