original_string: public function getExport($alias)
      {
          if (!array_key_exists($alias, $this->exports)) {
              throw new \RuntimeException("The export with alias $alias is not known.");
          }
          
          return $this->exports[$alias];
      }
code: public function getExport($alias)
      {
          if (!array_key_exists($alias, $this->exports)) {
              throw new \RuntimeException("The export with alias $alias is not known.");
          }
          
          return $this->exports[$alias];
      }
code_tokens: public function getExport ( $ alias ) { if ( ! array_key_exists ( $ alias , $ this -> exports ) ) { throw new \ RuntimeException ( "The export with alias $alias is not known." ) ; } return $ this -> exports [ $ alias ] ; }
docstring: Return an export by his alias
  
  @param string $alias
  @return ExportInterface
  @throws \RuntimeException
docstring_tokens: Return an export by his alias