public static ApiClientHeaderProvider.Builder defaultApiClientHeaderProviderBuilder() {
    return WebSecurityScannerStubSettings.defaultGrpcApiClientHeaderProviderBuilder();
  }
Returns a builder for the default REST ChannelProvider for this service.
java-websecurityscanner/google-cloud-websecurityscanner/src/main/java/com/google/cloud/websecurityscanner/v1alpha/stub/WebSecurityScannerStubSettings.java