A document selector to identify the scope of the registration. If set to null the document selector provided on the client side will be used.
OptionalretriggerList of characters that re-trigger signature help.
These trigger characters are only active when signature help is already showing. All trigger characters are also counted as re-trigger characters.
OptionaltriggerList of characters that trigger signature help automatically.
Optionalwork
Registration options for a SignatureHelpRequest.