Oracle user-defined data types

I am currently trialing Liquibase Pro hoping to understand the features and capabilities. It appears that Liquibase does not include Oracle user-defined data types in snapshots or generated changelogs. I was unable to find this explicitly addressed in the documentation.

Is there a way to include user-defined datatypes in automatically generated changelogs?

I can workaround the problem a bit by manually adding sql or sqlFile changesets to create the data types before the dependent changesets.