is_data_ptr method Null safety
Implementation
bool is_data_ptr() {
final constructor =
_dll_handle.lookupFunction<_Context_isDataPtr_c, _Context_isDataPtr_dart>(_context_namespace + 'isDataPtr');
final exception = _getException();
bool res = constructor(this._impl, exception);
tdvCheckException(exception, _dll_handle);
return res;
}