This parameter sets which predefined collection level data source(s) should be used for suggestions for all profiles.
To specify a non-predefined external file please use auto-completion.source.extra.
Possible values are:
internal: Spelling Suggestions will be used as auto completion suggestions
csv: A CSV file in the collection’s configuration directory, named
auto-completion.csvin the CSV data format. This collection level CSV file in the will be applied to all profiles. Profile
auto-completion.csvfiles will always be applied to its profile, even if csv is not set as a collection level auto completion source.