@Override
    public int hashCode() {
        int result = providerInfo != null ? providerInfo.hashCode() : 0;
        result = 31 * result + (consumerConfig != null ? consumerConfig.hashCode() : 0);
        return result;
    }
Gets dimension key.

@return the dimension key
fault/fault-tolerance/src/main/java/com/alipay/sofa/rpc/client/aft/InvocationStatDimension.java