@java.lang.Override
      public com.google.cloud.websecurityscanner.v1.ScanConfig.Authentication.IapCredentialOrBuilder
          getIapCredentialOrBuilder() {
        if ((authenticationCase_ == 4) && (iapCredentialBuilder_ != null)) {
          return iapCredentialBuilder_.getMessageOrBuilder();
        } else {
          if (authenticationCase_ == 4) {
            return (com.google.cloud.websecurityscanner.v1.ScanConfig.Authentication.IapCredential)
                authentication_;
          }
          return com.google.cloud.websecurityscanner.v1.ScanConfig.Authentication.IapCredential
              .getDefaultInstance();
        }
      }
<pre>
Authentication using Identity-Aware-Proxy (IAP).
</pre>

<code>
.google.cloud.websecurityscanner.v1.ScanConfig.Authentication.IapCredential iap_credential = 4;
</code>
java-websecurityscanner/proto-google-cloud-websecurityscanner-v1/src/main/java/com/google/cloud/websecurityscanner/v1/ScanConfig.java