@java.lang.Override
      public Builder mergeFrom(com.google.protobuf.Message other) {
        if (other instanceof com.google.cloud.websecurityscanner.v1.ScanConfig.Authentication) {
          return mergeFrom(
              (com.google.cloud.websecurityscanner.v1.ScanConfig.Authentication) other);
        } else {
          super.mergeFrom(other);
          return this;
        }
      }
<pre>
Scan authentication configuration.
</pre>

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