syntax_data: {"ast_node_type":"import","tokens":[{"end":73,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // adjust the DB index because we instantiating into a binder (it
context_before:         // => 'x` to `for<'b> Bar1<'a,'b>`, the instantiation code will
context_after:         // tries to be so smart...) resulting in `for<'x> for<'b>