original_string: public function getProxyServer()
      {
          $proxy_options = $this->getOption(EnumRequestOption::PROXY_OPTIONS, []);
          return isset($proxy_options[EnumProxyOption::PROXY_SERVER]) ? $proxy_options[EnumProxyOption::PROXY_SERVER] : '';
      }
code: public function getProxyServer()
      {
          $proxy_options = $this->getOption(EnumRequestOption::PROXY_OPTIONS, []);
          return isset($proxy_options[EnumProxyOption::PROXY_SERVER]) ? $proxy_options[EnumProxyOption::PROXY_SERVER] : '';
      }
code_tokens: public function getProxyServer ( ) { $ proxy_options = $ this -> getOption ( EnumRequestOption :: PROXY_OPTIONS , [ ] ) ; return isset ( $ proxy_options [ EnumProxyOption :: PROXY_SERVER ] ) ? $ proxy_options [ EnumProxyOption :: PROXY_SERVER ] : '' ; }
docstring: Returns proxy server
  
  @return string
docstring_tokens: Returns proxy server