code: @Override
      public HttpFilterBuilder equal(final String name, final String value) {
  
          return addFilter(new RequestFilter<HttpRequest>() {
  
              @Override
              public boolean matches(HttpRequest request) {
  
                  String headerValue = request.getHeader(name);
  
                  return headerValue != null ? headerValue.equals(value) : value == null;
              }
  
              @Override
              public String toString() {
                  return String.format("header.equal('%s', '%s')", name, value);
              }
          });
      }
docs: {@inheritDoc}