syntax_data: {"ast_node_type":"other","tokens":[{"end":57,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // just put them all in the binders of the first.
context_before:         // Since any predicates after the first one shouldn't change the binders,
context_after:         self.wrap_binder(&predicates[0], |p, _| {