includeFallback method
Retrieve the published content of the fallback locale if an entry is not localized in specified locale.
Example
final stack = contentstack.Stack('apiKey, 'deliveryKey, 'environment);
final query = stack.contentType('contentTypeUid').entry().query();
entry.includeFallback()
Implementation
void includeFallback() {
queryParameter['include_fallback'] = true.toString();
}