pub fn query_forward<'a>(
        &self,
        feature_ids: impl IntoIterator<Item = impl Into<FeatureId<'a>>>,
    ) -> Result<FeatureQuery<'g>, Error> {
        let feature_ids = feature_ids.into_iter().map(|feature_id| feature_id.into());
        Ok(FeatureQuery {
            graph: DebugIgnore(*self),
            params: QueryParams::Forward(self.feature_ixs(feature_ids)?),
        })
    }
Creates a new query that returns transitive dependencies of the given feature IDs.

Returns an error if any feature IDs are unknown.
guppy/src/graph/feature/query.rs