KeyringMockInit initializes this package so that its methods may be called from a test without reading or writing external state.

FakeTokenStore is a test implementation of LoadStorer that stores tokens in memory instead of the system keychain.

FileStore persists tokens in JSON files in a directory, one file per token.

Keyring stores a JWT token on the user's keyring via the OS-specific keyring mechanism of the current platform.

LoadStorer provides access to a token via some backend implementation/policy.