syntax_data: {"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:             // Luckily, by construction this is always possible.
context_before:             // *peel* a deref off of the place when it shows up in the MIR body.
context_after:             let peel_deref = if child_capture.is_by_ref() {