'Declaration Public ReadOnly Property AllowedLevels As OutlineLevelRange
public OutlineLevelRange AllowedLevels {get;}
If a TcFieldOptions.DisplayLevel of a TC field is not in this range, it will not be collected by the TOC field.
The default value is OutlineLevelRange.IsEmpty.
'Declaration Public ReadOnly Property AllowedLevels As OutlineLevelRange
public OutlineLevelRange AllowedLevels {get;}