docs: public static byte[] convertToKeyByteArray(String yourGooglePrivateKeyString)
  	{
  		yourGooglePrivateKeyString = yourGooglePrivateKeyString.replace('-', '+');
  		yourGooglePrivateKeyString = yourGooglePrivateKeyString.replace('_', '/');
  		return Base64.getDecoder().decode(yourGooglePrivateKeyString);
  	}