public function getUser( $userName ) {
		$users = $this->getUsers( array( $userName ) );
		return count( $users ) ? $user[0] : null;
	}
public function getUser( $userName ) {
		$users = $this->getUsers( array( $userName ) );
		return count( $users ) ? $user[0] : null;
	}
@param string $userName

@return User