syntax_data: {"ast_node_type":"import","tokens":[{"end":98,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// are applied. We use `PlaceBase::Upvar` to keep track of the root variable off of which the
context_before:     /// index (within the desugared closure) of the captured path until most of the projections
context_after:     /// captured path starts, the closure the capture belongs to and the trait the closure