ParameterInfo(mapping=None, *, ignore_unknown_fields=False, **kwargs)Represents parameter information. Attributes: display_name (str): Always present for [WebhookRequest][google.cloud.dialogflow.cx.v3beta1.WebhookRequest]. Required for [WebhookResponse][google.cloud.dialogflow.cx.v3beta1.WebhookResponse]. The human-readable name of the parameter, unique within the form. This field cannot be modified by the webhook. required (bool): Optional for both [WebhookRequest][google.cloud.dialogflow.cx.v3beta1.WebhookRequest] and [WebhookResponse][google.cloud.dialogflow.cx.v3beta1.WebhookResponse]. Indicates whether the parameter is required. Optional parameters will not trigger prompts; however, they are filled if the user specifies them. Required parameters must be filled before form filling concludes. state (google.cloud.dialogflowcx_v3beta1.types.PageInfo.FormInfo.ParameterInfo.ParameterState): Always present for [WebhookRequest][google.cloud.dialogflow.cx.v3beta1.WebhookRequest]. Required for [WebhookResponse][google.cloud.dialogflow.cx.v3beta1.WebhookResponse]. The state of the parameter. This field can be set to [INVALID][google.cloud.dialogflow.cx.v3beta1.PageInfo.FormInfo.ParameterInfo.ParameterState.INVALID] by the webhook to invalidate the parameter; other values set by the webhook will be ignored. value (google.protobuf.struct_pb2.Value): Optional for both [WebhookRequest][google.cloud.dialogflow.cx.v3beta1.WebhookRequest] and [WebhookResponse][google.cloud.dialogflow.cx.v3beta1.WebhookResponse]. The value of the parameter. This field can be set by the webhook to change the parameter value. just_collected (bool): Optional for [WebhookRequest][google.cloud.dialogflow.cx.v3beta1.WebhookRequest]. Ignored for [WebhookResponse][google.cloud.dialogflow.cx.v3beta1.WebhookResponse]. Indicates if the parameter value was just collected on the last conversation turn.