docs: def registerResponse(self, node, vendorSpecific=None):
          """CNRegister.register(session, node) → NodeReference
          https://releases.dataone.org/online/api-
          documentation-v2.0.1/apis/CN_APIs.html#CNRegister.register.
  
          Args:
            node:
            vendorSpecific:
  
          Returns:
  
          """
          mmp_dict = {'node': ('node.xml', node.toxml('utf-8'))}
          return self.POST('node', fields=mmp_dict, headers=vendorSpecific)