syntax_data: {"ast_node_type":"other","tokens":[{"end":45,"kind":"keyword","start":0,"text":"body.source_scopes.push(SourceScopeData"}]}
source_snippet:     body.source_scopes.push(SourceScopeData {
context_before:     body.basic_blocks_mut().push(BasicBlockData::new(None, false));
context_after:         span,