Function resolved_identifier_bindings_with_source 

pub fn resolved_identifier_bindings_with_source(
    params: &[TypedParam],
    body: &[SNode],
    source: Option<&str>,
    match_patterns: &MatchPatternCatalog,
) -> HashMap<(usize, usize), BindingId>

Resolve exact declarations, including defaults and interpolated expressions.