getFieldExtension method

Extension? getFieldExtension()

Gets the the field extension.

return The field extension. throws BiosealException An error has occurred during Bioseal Library execution.

Implementation

Extension? getFieldExtension() {
  Extension fieldExtension = Extension();
  var err = biosealSDK.id3BiosealField_GetFieldExtension(_pHandle.value, fieldExtension.handle);
  if (err == BiosealError.objectDoesNotExist.value) {
    fieldExtension.dispose();
    return null;
  }
  if (err != BiosealError.success.value) {
    fieldExtension.dispose();
    throw BiosealException(err);
  }
  return fieldExtension;
}