func (gceProvider *GceProvider) GetCredentials() error {
	cd := tcclient.Client(*gceProvider)
	_, _, err := (&cd).APICall(nil, "POST", "/credentials", nil, nil)
	return err
}
func (gceProvider *GceProvider) GetCredentials() error {
	cd := tcclient.Client(*gceProvider)
	_, _, err := (&cd).APICall(nil, "POST", "/credentials", nil, nil)
	return err
}
// Stability: *** EXPERIMENTAL ***
//
// TODO
//
// See #getCredentials