original_string: public function getCustomer($customerId)
      {
          $requestData = new Get\RequestData();
          $requestData->setCustomerId($customerId);
  
          $customers = $this->getCustomers($requestData)->getResponse()->getCustomers();
  
          return isset($customers[0]) ? $customers[0] : null;
      }
code: public function getCustomer($customerId)
      {
          $requestData = new Get\RequestData();
          $requestData->setCustomerId($customerId);
  
          $customers = $this->getCustomers($requestData)->getResponse()->getCustomers();
  
          return isset($customers[0]) ? $customers[0] : null;
      }
code_tokens: public function getCustomer ( $ customerId ) { $ requestData = new Get \ RequestData ( ) ; $ requestData -> setCustomerId ( $ customerId ) ; $ customers = $ this -> getCustomers ( $ requestData ) -> getResponse ( ) -> getCustomers ( ) ; return isset ( $ customers [ 0 ] ) ? $ customers [ 0 ] : null ; }
docstring: Get one customer by ID.
  
  @param integer $customerId The customer ID.
  @return Customer|null
docstring_tokens: Get one customer by ID .