<?php
  public function get_practices_by_filter($sourceService, &$error) {
    // DrupalSoapClient
  	$dsc = $this->getDsc();

    if (!$this->setWsdlError($error)) {
      return NULL;
    }

    $method_name = 'TestConnection';
    $method_result_name = $method_name .'Result';

    $params = array(
        'sourceService' => 'SB',);

    // Calling the method
    $this->logTimes("Start {time}: $method_name");
    $call = $dsc->call($method_name, $params, TRUE);
    $error = $call['#error'] ? $call['#error'] .' - '. $call['#return'] : '';
    $this->logErrors($call, $method_name);
    $this->logTimes("End {time}: $method_name");

    //Return
    return $call['#return'][$method_result_name];
  }