code: func (sp *StandardProvider) Ready() bool {
  	switch {
  	case sp.internal.priv == nil:
  		return false
  	case sp.internal.cert == nil:
  		return false
  	case sp.internal.keyPEM == nil:
  		return false
  	case sp.internal.certPEM == nil:
  		return false
  	default:
  		return true
  	}
  }
docs: // Ready returns true if the provider has a key and certificate
  // loaded. The certificate should be checked by the end user for
  // validity.