code: public function permAssign($permid, $permvalue)
      {
          return $this->getParent()->channelPermAssign($this->getId(), $permid, $permvalue);
      }
docs: Adds a set of specified permissions to the channel. Multiple permissions can be added by
  providing the two parameters of each permission.
  
  @param  integer $permid
  @param  integer $permvalue
  @return void