Sets a value which marks the misspelled word as duplicate. A duplicate word is not misspelled, but it has the same text as the word in front of it.
<void> MisspelledWord.setIsDuplicate(<Boolean> isDuplicate, [<EmptyRequestCallback> callback], [<ErrorCallback> errorCallback])
||Indicates whether the word is marked as duplicate.|
|callback||Optional. Is called when the operation completed.|
||Optional. Is called when the operation failed with an error.|