Imports golang.org/x/net/context google.golang.org/api/googleapi google.golang.org/api/identitytoolkit/v3 google.golang.org/api/transport google.golang.org/api/option google.golang.org/api/iterator firebase.google.com/go/internal golang.org/x/net/context/ctxhttp Standard library imports bytes crypto/rand crypto/x509 encoding/base64 encoding/json errors fmt io/ioutil net/http regexp strconv strings sync time crypto/rsa encoding/pem crypto crypto/sha256