contains method Null safety
- String key
Implementation
bool contains(String key) {
var exception = _getException();
final constructor = _dll_handle.lookupFunction<_Context_contains_c, _Context_contains_dart>(_context_namespace + 'contains');
bool result = constructor(_impl, key.toNativeUtf8(), exception);
tdvCheckException(exception, _dll_handle);
return result;
}