syntax_data: {"ast_node_type":"other","tokens":[{"end":36,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:                 if dyn_a == dyn_b =>
context_before:             (&ty::Dynamic(data_a, r_a, dyn_a), &ty::Dynamic(data_b, r_b, dyn_b))
context_after:             {