Imports
- github.com/hashicorp/errwrap
- github.com/hashicorp/vault/sdk/framework
- github.com/hashicorp/vault/sdk/helper/strutil
- github.com/hashicorp/vault/sdk/logical
- github.com/jeffchao/backoff
- golang.org/x/oauth2/google
- golang.org/x/oauth2/google/downscope
- google.golang.org/api/impersonate
- google.golang.org/api/option