These functions signal simple conditions with
base::signalCondition()). They don't have any effect
unless a condition handler is installed for conditions of class
signal_experimental(when, what) signal_superseded(when, what, with = NULL) lifecycle_cnd_data(cnd)
The version at which the feature was assigned a lifecycle stage.
Feature specifications for the feature and
optionally its replacement. See
A condition object thrown by
In order to be fast,
signal_superseded() do not validate their arguments. Instead, you
need to catch the condition object and pass it to
lifecycle_cnd_data() to get structured data.