syntax_data: {"ast_node_type":"other","tokens":[{"end":89,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // a `NeedsDropMode` so that we can have a variant like `CollectAllSignificantDrops`,
context_before:     // necessary. If this isn't possible, then we probably should turn this into
context_after:     // which will more accurately indicate that we want *all* of the *significant*