The utility DeleteArchivedBackups is used to delete old databases backup files.
A DBA needs to keep files in a directory with different databases backup files rotated.
That is a DBA needs to deleted all but several last files for each database.
File names must obey a naming scheme - name_YYYY-MM-ddThh-mm-ss-sss-suffix.ext
A database backup may have files with a 'FULL' suffix for full database backup and other suffices for differential backups.
For example you have several files:
store1-2020-21-01T12-34-00-001-FULL.bak
store1-2020-22-02T10-15-00-002-differential.bak
store1-2020-23-01T09-02-00-001-FULL.bak
store1-2020-23-04T01-01-00-001-differential.bak
store1-2020-24-01T02-02-00-001-differential.bak
What files from the example above are outdated files?