string String to return as the return value of the DownloadHandler.text property.
Callback, invoked when the DownloadHandler.text property is accessed.
The return value of this method will be returned as the value of the DownloadHandler.data property.
This method will be invoked on the main thread.
If not overridden, the default behavior of this callback is to call DownloadHandler.GetData. If DownloadHandler.GetData returns null or an empty string, then this method will return null or an empty string (respectively). Otherwise, this method will decode the byte array returned from DownloadHandler.GetData as a UTF8 string and return the decoded string.