persistValues property
Indicates whether form values persist after the action.
The default value is false. If true, form values remain after the
action is triggered. To let the user make changes while the action is
being processed, set
[LoadIndicator](https://developers.google.cn/workspace/add-ons/reference/rpc/google.apps.card.v1#loadindicator)
to NONE. For
card messages
in Chat apps, you must also set the action's
[ResponseType](https://developers.google.cn/workspace/chat/api/reference/rest/v1/spaces.messages#responsetype)
to UPDATE_MESSAGE and use the same
[card_id](https://developers.google.cn/workspace/chat/api/reference/rest/v1/spaces.messages#CardWithId)
from the card that contained the action. If false, the form values are
cleared when the action is triggered. To prevent the user from making
changes while the action is being processed, set
[LoadIndicator](https://developers.google.cn/workspace/add-ons/reference/rpc/google.apps.card.v1#loadindicator)
to SPINNER.
Implementation
core.bool? persistValues;