/*******************************************************************************
*
* Copyright (c) 2026 Haixing Hu.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0.
*
******************************************************************************/
//! Service specification binding configuration and service contracts.
/// Type-level description of one pluggable service family.
///
/// A service specification gives a registry one type parameter that carries the
/// configuration type accepted by providers and the service contract implemented
/// by produced services.