syntax_data: {"ast_node_type":"function","tokens":[{"end":84,"kind":"keyword","start":0,"text":"pub(crate)"}]}
source_snippet:     pub(crate) fn push_scope(&mut self, region_scope: (region::Scope, SourceInfo)) {
context_before:     /// wrapper maybe preferable.
context_after:         self.scopes.push_scope(region_scope, self.source_scope);