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I am looking through the core files (as a learning tool) and I for the life of me cannot find how being on the friend requests page changes the function argument from false to true for this method:

Being on the requests page somehow changes the $friend_requests_only var to TRUE. How? I searched everywhere and I dont see it happening.

	public static function get_friend_user_ids( $user_id, $friend_requests_only = false, $assoc_arr = false ) {
		global $wpdb;

		if ( !empty( $friend_requests_only ) ) {
			$oc_sql = 'AND is_confirmed = 0';
			$friend_sql = $wpdb->prepare( " WHERE friend_user_id = %d", $user_id );
		} else {
			$oc_sql = 'AND is_confirmed = 1';
			$friend_sql = $wpdb->prepare( " WHERE (initiator_user_id = %d OR friend_user_id = %d)", $user_id, $user_id );
		}

		$friends = $wpdb->get_results( "SELECT friend_user_id, initiator_user_id FROM {$wpdb->prefix}ms_friends {$friend_sql} {$oc_sql} ORDER BY date_created DESC" );
		$fids = array();

		for ( $i = 0, $count = count( $friends ); $i < $count; ++$i ) {
			if ( !empty( $assoc_arr ) ) {
				$fids[] = array( 'user_id' => ( $friends[$i]->friend_user_id == $user_id ) ? $friends[$i]->initiator_user_id : $friends[$i]->friend_user_id );
			} else {
				$fids[] = ( $friends[$i]->friend_user_id == $user_id ) ? $friends[$i]->initiator_user_id : $friends[$i]->friend_user_id;
			}
		}

		return $fids;
	}

I do see in the member functions a check is done to test if the requests page is active:

	// User filtering
	if ( bp_is_user_friends() && ! bp_is_user_friend_requests() ) {
		$user_id = bp_displayed_user_id();
	}

however this only populates the $user_id var and should have no affect on the $friend_requests_only var above. Can someone clarify how this is done?