Sets whether the item at index idx has a checkbox. If false, sets the type of the item to plain text. Note: Checkable items just display a checkmark, but don't have any built-in checking behavior and must be checked/unchecked manually.
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Sets whether the item at index idx has a checkbox. If false, sets the type of the item to plain text. Note: Checkable items just display a checkmark, but don't have any built-in checking behavior and must be checked/unchecked manually.