@Override
        public boolean equals(@Nullable Object o) {
            if (this == o) {
                return true;
            }

            if (!(o instanceof PoolKey)) {
                return false;
            }

            final PoolKey that = (PoolKey) o;
            return hashCode == that.hashCode &&
                   endpoint.equals(that.endpoint) &&
                   proxyConfig.equals(that.proxyConfig);
        }
Closes all {@link Channel}s managed by this pool.
core/src/main/java/com/linecorp/armeria/client/HttpChannelPool.java