code: def activate_vcenter(self, **kwargs):
          
          name = kwargs.pop('name')
          activate = kwargs.pop('activate', True)
          vcenter_args = dict(id=name)
          method_class = self._brocade_vswitch
          if activate:
              method_name = 'vcenter_activate'
              vcenter_attr = getattr(method_class, method_name)
              config = vcenter_attr(**vcenter_args)
              output = self._callback(config)
              print output
              return output
          else:
              pass
docs: Activate vCenter on the switch
  
          Args:
              name: (str) : Name of an established vCenter
              activate (bool) : Activates the vCenter if activate=True
                                else deactivates it
              callback (function): A function executed upon completion of the
                   method.
  
          Returns:
             Return value of `callback`.
  
          Raises:
              None