code: def get_view(self, columns: Sequence[str], query: str=None) -> PopulationView:
          
          if 'tracked' not in columns:
              query_with_track = query + 'and tracked == True' if query else 'tracked == True'
              return PopulationView(self, columns, query_with_track)
          return PopulationView(self, columns, query)
docs: Return a configured PopulationView
  
          Notes
          -----
          Client code should only need this (and only through the version exposed as
          ``population_view`` on the builder during setup) if it uses dynamically
          generated column names that aren't known at definition time. Otherwise
          components should use ``uses_columns``.