static DocServiceFilter ofMethodName(String pluginName, String serviceName, String methodName) {
        return (plugin, service, method) -> pluginName.equals(plugin) && serviceName.equals(service) &&
                                            methodName.equals(method);
    }
Returns a {@link DocServiceFilter} which returns {@code true} when the name of the plugin, service and
method matches the specified {@code pluginName}, {@code serviceName} and {@code methodName}.
core/src/main/java/com/linecorp/armeria/server/docs/DocServiceFilter.java