public Builder mergeFrom(
              com.google.cloud.websecurityscanner.v1.ScanConfig.Authentication.IapCredential
                      .IapTestServiceAccountInfo
                  other) {
            if (other
                == com.google.cloud.websecurityscanner.v1.ScanConfig.Authentication.IapCredential
                    .IapTestServiceAccountInfo.getDefaultInstance()) return this;
            if (!other.getTargetAudienceClientId().isEmpty()) {
              targetAudienceClientId_ = other.targetAudienceClientId_;
              bitField0_ |= 0x00000001;
              onChanged();
            }
            this.mergeUnknownFields(other.getUnknownFields());
            onChanged();
            return this;
          }
<pre>
Describes authentication configuration when Web-Security-Scanner
service account is added in Identity-Aware-Proxy (IAP) access policies.
</pre>

Protobuf type {@code
google.cloud.websecurityscanner.v1.ScanConfig.Authentication.IapCredential.IapTestServiceAccountInfo}
java-websecurityscanner/proto-google-cloud-websecurityscanner-v1/src/main/java/com/google/cloud/websecurityscanner/v1/ScanConfig.java