syntax_data: {"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                 // reference into the surrounding environment through a raw pointer, thus creating
context_before:                 // self` as a parameter. In the general case, a drop impl could launder that
context_after:                 // a valid `*mut` pointing to the dropped local. We are not yet willing to declare