Because the fingerprint returned by validation_key() determines the outcome
of repair_params() and of the structural validity checks, an object whose
fingerprint has been recorded by a previous call to validParams() needs
neither. The record lasts for the R session only.
is_validated(key)record_validated(key, max_size = validated_params_max)
clear_validated_params()
is_validated() returns TRUE if the fingerprint has been recorded.
record_validated() returns NULL, invisibly.
clear_validated_params() returns NULL, invisibly. The next
validation of any object then takes the full path again.
A fingerprint as returned by validation_key().
The number of fingerprints to keep. When the record has grown to this size it is emptied.