syntax_data: {"ast_node_type":"variable","tokens":[{"end":77,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:     let mangling_version_crate = instantiating_crate.unwrap_or(def_id.krate);
context_before:     // 2. we favor `instantiating_crate` where possible (i.e. when `Some`)
context_after:     let mangling_version = if mangling_version_crate == LOCAL_CRATE {