How to use the @aws-sdk/config-resolver.ProtocolConfig.resolve function in @aws-sdk/config-resolver

constructor(configuration: RDSDataConfiguration) {
    const intermediaConfig_0 = ProtocolConfig.resolve({
      ...RDSRuntimeConfiguration,
      ...configuration
    });
    super(intermediaConfig_0);
    let intermediaConfig_1 = RegionConfiguration.resolve(intermediaConfig_0);
    let intermediaConfig_2 = AwsAuthConfiguration.resolve(intermediaConfig_1);
    let intermediaConfig_3 = EndpointsConfig.resolve(intermediaConfig_2);
    let intermediaConfig_4 = RetryConfig.resolve(intermediaConfig_3);
    let intermediaConfig_5 = UserAgentConfig.resolve(intermediaConfig_4);
    this.config = intermediaConfig_5;
    super.use(contentLengthPlugin(this.config));
    if (this.config.maxRetries > 0) {
      super.use(retryPlugin(this.config));
    }
    super.use(signingPlugin(this.config));
    super.use(UserAgentPlugin(this.config));