original_string: private function normalizeHeaders(array $headers)
      {
          $ignoreHeaders = $this->ignoreHeaders;
  
          foreach ($ignoreHeaders as $ignoreHeader) {
              $headers = array_filter($headers, function($header) use ($ignoreHeader) {
                  return stripos($header, $ignoreHeader.':') !== 0;
              });
          }
  
          return $headers;
      }
code: private function normalizeHeaders(array $headers)
      {
          $ignoreHeaders = $this->ignoreHeaders;
  
          foreach ($ignoreHeaders as $ignoreHeader) {
              $headers = array_filter($headers, function($header) use ($ignoreHeader) {
                  return stripos($header, $ignoreHeader.':') !== 0;
              });
          }
  
          return $headers;
      }
code_tokens: private function normalizeHeaders ( array $ headers ) { $ ignoreHeaders = $ this -> ignoreHeaders ; foreach ( $ ignoreHeaders as $ ignoreHeader ) { $ headers = array_filter ( $ headers , function ( $ header ) use ( $ ignoreHeader ) { return stripos ( $ header , $ ignoreHeader . ':' ) !== 0 ; } ) ; } return $ headers ; }
docstring: Get only those headers that should not be ignored
  
  @param array $headers
  @return array
docstring_tokens: Get only those headers that should not be ignored