Union satisfied by.
type SandboxResponseMountConfigMountsUnion interfaceUnion satisfied by [SandboxResponseMountConfigMountsSandboxapiS3BucketMountSpec], [SandboxResponseMountConfigMountsSandboxapiGcsBucketMountSpec], [SandboxResponseMountConfigMountsSandboxapiGitRepoMountSpec] or [SandboxResponseMountConfigMountsSandboxapiContextHubRepoMountSpec].