private com.google.protobuf.MapField<java.lang.String, java.lang.String>
      internalGetAdditionalInfo() {
    if (additionalInfo_ == null) {
      return com.google.protobuf.MapField.emptyMapField(
          AdditionalInfoDefaultEntryHolder.defaultEntry);
    }
    return additionalInfo_;
  }
<pre>
The original product which holds the custom processor's functionality.
</pre>

<code>.google.cloud.visionai.v1.CustomProcessorSourceInfo.SourceType source_type = 1;</code>

@return The sourceType.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/CustomProcessorSourceInfo.java