private void addFragmentConfig() {
        Map<Object, Object> attrs = context.getAttributes();
        Object fragmentProcess = attrs.get(Constants.FRAGMENT_PROCESS);
        if (fragmentProcess != null) {
            buffer.append(",fp:\"").append(fragmentProcess).append("\"");
        }
        Object fragmentUpdate = attrs.get(Constants.FRAGMENT_UPDATE);
        if (fragmentUpdate != null) {
            buffer.append(",fu:\"").append(fragmentUpdate).append("\"");
        }
    }
Passes parameters to the ajax request. If the first argument is a plain object, it will be converted to an array of name-value pairs.
Otherwise, the argument will be passed as-is.

@return The current instance of AjaxRequestBuilder
primefaces/src/main/java/org/primefaces/util/AjaxRequestBuilder.java