@Override
    public String toString() {
        return super.toString() + "{" +
            "future=" + future +
            ", localAddress=" + localAddress +
            ", remoteAddress=" + remoteAddress +
            ", attachments=" + attachments +
            ", stopWatch=" + stopWatch +
            ", providerSide=" + providerSide +
            ", providerInfo=" + providerInfo +
            '}';
    }
Gets provider info.

@return the provider info
core/api/src/main/java/com/alipay/sofa/rpc/context/RpcInternalContext.java