original_string: public function removeHeader($header)
      {
          if (Horde_String::lower($header) === 'bcc') {
              unset($this->_bcc);
          } else {
              $this->_headers->removeHeader($header);
          }
      }
code: public function removeHeader($header)
      {
          if (Horde_String::lower($header) === 'bcc') {
              unset($this->_bcc);
          } else {
              $this->_headers->removeHeader($header);
          }
      }
code_tokens: public function removeHeader ( $ header ) { if ( Horde_String :: lower ( $ header ) === 'bcc' ) { unset ( $ this -> _bcc ) ; } else { $ this -> _headers -> removeHeader ( $ header ) ; } }
docstring: Removes a message header.
  
  @param string $header  The header name.
docstring_tokens: Removes a message header .