code: @Deprecated
      public static String getHeader(HttpMessage message, CharSequence name, String defaultValue) {
          return message.headers().get(name, defaultValue);
      }
docs: @deprecated Use {@link #get(CharSequence, String)} instead.
  
  Returns the header value with the specified header name.  If there are
  more than one header value for the specified header name, the first
  value is returned.
  
  @return the header value or the {@code defaultValue} if there is no such
  header