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