Resources > Builds > Types ?

What are possible types that we can use in resources > builds?

https://docs.microsoft.com/en-us/azure/devops/pipelines/process/resources?view=azure-devops&tabs=schema#define-a-builds-resource=

It is unclear what are possible types and how to add new types. For example we have JFROG extension installed and it adds new release pipeline artifact type:

How can I use that in build pipelines as build resource?

resources:
  builds:
    - build: test
      type: jfrog-artifactory-release-artifact-type (doesn't work)
      connection: FROG CA
      source: ats-java-external-portal

 Not sure if this will help or not but jfrog extension source code is here:

https://github.com/jfrog/jfrog-azure-devops-extension/blob/v2/vss-extension.json

Side note: For example we would like to have ability to select artifacts stored in Blob storage and use those as resources in our tasks (We're building release pipeline as build pipeline yaml).