inputParameters property
Map from placeholder parameter in the Generator to corresponding session parameters.
By default, Dialogflow uses the session parameter with the same name to
fill in the generator template. e.g. If there is a placeholder parameter
city in the Generator, Dialogflow default to fill in the $city with
$session.params.city. However, you may choose to fill $city with
$session.params.desination-city. - Map key: parameter ID - Map value:
session parameter name
Implementation
core.Map<core.String, core.String>? inputParameters;