code: @Override
      public InitParamDef initParam(String name, Object value) {
          Node init = child.createChild("init-param");
          init.createChild("param-name").text(name);
          init.createChild("param-value").text(String.valueOf(value));
          return this;
      }
docs: /* (non-Javadoc)
  @see org.jboss.shrinkwrap.descriptor.api.spec.web.FilterDef#initParam(java.lang.String, java.lang.Object)