code: def post(method, hmc, uri, uri_parms, body, logon_required,
               wait_for_completion):
          
          assert wait_for_completion is True  # HMC operation is synchronous
          adapter_uri = uri.split('/operations/')[0]
          try:
              adapter = hmc.lookup_by_uri(adapter_uri)
          except KeyError:
              raise InvalidResourceError(method, uri)
          cpc = adapter.manager.parent
          assert cpc.dpm_enabled
          check_required_fields(method, uri, body, ['crypto-type'])
  
          # Check the validity of the new crypto_type
          crypto_type = body['crypto-type']
          if crypto_type not in ['accelerator', 'cca-coprocessor',
                                 'ep11-coprocessor']:
              raise BadRequestError(
                  method, uri, reason=8,
                  message="Invalid value for 'crypto-type' field: %s" %
                  crypto_type)
  
          # Reflect the result of changing the crypto type
          adapter.properties['crypto-type'] = crypto_type
docs: Operation: Change Crypto Type (requires DPM mode).