def select_included(
        self,
        included_nodes: Set[UniqueId],
        spec: SelectionCriteria,
    ) -> Set[UniqueId]:
        """Select the explicitly included nodes, using the given spec. Return
        the selected set of unique IDs.
        """
        method = self.get_method(spec.method, spec.method_arguments)
        return set(method.search(included_nodes, spec.value))
Select the explicitly included nodes, using the given spec. Return
        the selected set of unique IDs.
        
core/dbt/graph/selector.py