fn definitions_only(
r: Result<(SymbolName, SimpleSpan, SymbolUse), InconsistentSymbolUse>,
) -> Option<Result<(SymbolName, SimpleSpan, ExplicitDefinition), InconsistentSymbolUse>>
fn definitions_only(
r: Result<(SymbolName, SimpleSpan, SymbolUse), InconsistentSymbolUse>,
) -> Option<Result<(SymbolName, SimpleSpan, ExplicitDefinition), InconsistentSymbolUse>>