if (empty($this->profile_a) || empty($this->profile_b)) {
$this->clientError(
// TRANS: Client error displayed when supplying invalid parameters to an API call checking if a friendship exists.
_('Two valid IDs or nick names must be supplied.'),
if (empty($this->profile_a) || empty($this->profile_b)) {
$this->clientError(
// TRANS: Client error displayed when supplying invalid parameters to an API call checking if a friendship exists.
_('Two valid IDs or nick names must be supplied.'),