original_string: public function get($parameter)
      {
          return isset($this->credentials[$parameter]) ? $this->credentials[$parameter] : null;
      }
code: public function get($parameter)
      {
          return isset($this->credentials[$parameter]) ? $this->credentials[$parameter] : null;
      }
code_tokens: public function get ( $ parameter ) { return isset ( $ this -> credentials [ $ parameter ] ) ? $ this -> credentials [ $ parameter ] : null ; }
docstring: Get a single credential parameter.
  
  @param string $parameter
  @return mixed|null
docstring_tokens: Get a single credential parameter .