public function deleteByGroup($account, $groupOwner, $groupSlug, $email)
    {
        return $this->requestDelete(
            sprintf('users/%s/invitations/%s/%s/%s', $account, $email, $groupOwner, $groupSlug)
        );
    }
public function deleteByGroup($account, $groupOwner, $groupSlug, $email)
    {
        return $this->requestDelete(
            sprintf('users/%s/invitations/%s/%s/%s', $account, $email, $groupOwner, $groupSlug)
        );
    }
public function deleteByGroup ( $ account , $ groupOwner , $ groupSlug , $ email ) { return $ this -> requestDelete ( sprintf ( 'users/%s/invitations/%s/%s/%s' , $ account , $ email , $ groupOwner , $ groupSlug ) ) ; }
Delete pending invitations by group

Deletes a pending invitation for a particular email on account's group.

@access public
@param  string           $account    The name of an individual or team account.
@param  string           $groupOwner The name of an individual or team account that owns the group.
@param  string           $groupSlug  An identifier for the group.
@param  string           $email      Name of the email address to delete.
@return MessageInterface
Delete pending invitations by group