AuthorValidationError is the validation error returned by Author.Validate if the designated constraints aren't met.

CommitValidationError is the validation error returned by Commit.Validate if the designated constraints aren't met.

ProjectValidationError is the validation error returned by Project.Validate if the designated constraints aren't met.

RepositoryValidationError is the validation error returned by Repository.Validate if the designated constraints aren't met.

See https://docs.gitlab.com/ee/api/events.html.

WebhookEventValidationError is the validation error returned by WebhookEvent.Validate if the designated constraints aren't met.