message: Expose Set<T>::get()
diff: @@ -50,6 +50,7 @@ public:
  using Collection<T, SetBase>::size;
  using Collection<T, SetBase>::begin;
  using Collection<T, SetBase>::end;
  + using Collection<T, SetBase>::get;
  Set() = default;
  Set(const Obj& owner, ColKey col_key);
  @@ -81,7 +82,6 @@ public:
  private:
  using Collection<T, SetBase>::m_valid;
  using Collection<T, SetBase>::m_obj;
  - using Collection<T, SetBase>::get;
  void create()
  {
  