Minimod.NestedDictionary (nuget): Extends System.Collections.Generic.IDictionary´2 with EnsureValueFor and AddToCollection:             a) EnsureValueFor(TKey key): Creates a instance of TValue for the given key and returns it;               b) AddToCollection(TKey key, item(s)): Ensures the concrete collection type for key, and adds the given value(s) to it.
Keywords: minimod