Function local_relation_matches 

fn local_relation_matches<'a>(
    relation: &SymbolRelation,
    owners: &GraphOwners,
    graph: &SymbolGraph,
    symbol_index: &GraphSymbolIndex<'_>,
    staged_entities: &'a BTreeMap<String, GraphEntity>,
    control: &IndexWorkControl,
) -> Result<ResolutionMatches<'a>, CliError>

Resolve exact declarations owned by the relation’s source file.