fn add_initial_partial_graph(
graph_adder: &mut PartialGraphAdder<'_>,
partial_graph_id: PartialGraphId,
request: InitialPartialGraphRequest<'_>,
) -> MetaResult<()>fn add_initial_partial_graph(
graph_adder: &mut PartialGraphAdder<'_>,
partial_graph_id: PartialGraphId,
request: InitialPartialGraphRequest<'_>,
) -> MetaResult<()>