createToken() protected method Creates token from its

$clientId public property OAuth client ID.

composeRequestCurlOptions() protected method Composes

$clientSecret public property OAuth client secret.

fetchAccessToken() public method Fetches access token

defaultReturnUrl() protected method Composes default

$tokenUrl public property Token request URL endpoint.

apiInternal() protected method Performs request to the

$version public property Protocol version.

refreshAccessToken() public method Gets new auth token