code: private function cleanUpParameters(array $parameters)
      {
          foreach ($parameters as $key => $value) {
              // PHP coerces `true` to `"1"` which some Twitter APIs don't like.
              if (is_bool($value)) {
                  $parameters[$key] = var_export($value, true);
              }
          }
          return $parameters;
      }
docs: Cleanup any parameters that are known not to work.
  
  @param array  $parameters
  
  @return array