Returns an application configuration by application id or application type, or null when
none matches.
An appType query matches the type-level config only (the one without an appId), so it is
independent of the order the dashboard published configs in. An appId query matches that
application's config.
Suspends until the dashboard publishes its application configs.
Returns an application configuration by application id or application type, or
nullwhen none matches.An
appTypequery matches the type-level config only (the one without anappId), so it is independent of the order the dashboard published configs in. AnappIdquery matches that application's config.Suspends until the dashboard publishes its application configs.