Adds the elements of another LevelCollection to the current LevelCollection.
LevelCollection whose elements should be added to the end of the current LevelCollection.The new Count of the LevelCollection.
Missing <remarks> documentation for M:log4net.Core.LevelCollection.AddRange(log4net.Core.LevelCollection)
LevelCollection Class | log4net.Core Namespace | LevelCollection.AddRange Overload List