syntax_data: {"ast_node_type":"import","tokens":[{"end":83,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                     // This place is not really used because this destination place
context_before:                     let else_block_span = this.thir[*else_block].span;
context_after:                     // should never be used to take values at the end of the failure