syntax_data: {"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:             // If this type is a GAT, and of the GAT args resolve to something new,
context_before:             // FIXME(generic_associated_types): Addresses aggressive inference in #92917.
context_after:             // that means that we must have newly inferred something about the GAT.