code: def grant(self, *capabilities_to_grant):
          
          possible_capabilities = self.service.capabilities
          for capability in capabilities_to_grant:
              if capability not in possible_capabilities:
                  raise NoSuchCapability(capability)
          new_capabilities = self['capabilities'] + list(capabilities_to_grant)
          self.post(capabilities=new_capabilities)
          return self
docs: Grants additional capabilities to this role.
  
          :param capabilities_to_grant: Zero or more capabilities to grant this
              role. For a list of capabilities, see
              `Capabilities <http://dev.splunk.com/view/SP-CAAAEJ6#capabilities>`_
              on Splunk Developer Portal.
          :type capabilities_to_grant: ``string`` or ``list``
          :return: The :class:`Role`.
  
          **Example**::
  
              service = client.connect(...)
              role = service.roles['somerole']
              role.grant('change_own_password', 'search')