https://docs.cloud.google.com/java/docs/reference/google-cloud-speech/latest/com.google.cloud.speech.v2.AccessMetadata.ConstraintType
Enum AccessMetadata.ConstraintType (4.86.0) | Java client libraries | Google Cloud Documentation
https://ngageoint.github.io/geopackage-core-java/docs/api/mil/nga/geopackage/db/table/ConstraintType.html
ConstraintType (GeoPackage Core 6.6.7 API)
geopackagecoreapi