Imports cloud.google.com/go/compute/metadata cloud.google.com/go/iam/credentials/apiv1 golang.org/x/oauth2 golang.org/x/oauth2/google golang.org/x/net/context git.sr.ht/~urandom/errors google.golang.org/genproto/googleapis/iam/credentials/v1 Standard library imports bytes encoding/json fmt io io/ioutil net/http net/url strings time