syntax_data: {"ast_node_type":"import","tokens":[{"end":64,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // Bar1<'x,'b>` (we have no syntax for this, so use your
context_before:         // tries to be so smart...) resulting in `for<'x> for<'b>
context_after:         // imagination). Basically the 'x will have DB index of 2 and 'b