how can we check if input.original_text exists or not?

[henrywill4]

This article mentions that input.original_text only is created if a spelling correction takes place, so we need to check if it exists. Well, how can we check if input.original_text exists or not? I'm searching the docs and not finding how to do that.

[henrywill4]

With lots of trying and testing, we can up with this condition to check input.text?.toLowerCase()?.contains('~iat') || input.original_text?.toLowerCase()?.contains('~iat')

[henrywill4]

another alternative from https://cloud.ibm.com/docs/assistant?topic=assistant-dialog-methods#dialog-methods-objects-jsonobject-has

perhaps check for input.has(original_text) as an alternative