syntax_data: {"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"interner.debug_assert_existential_args_compatible(def_id,"}]}
source_snippet:         interner.debug_assert_existential_args_compatible(def_id, args);
context_before:     ) -> ExistentialProjection<I> {
context_after:         Self { def_id, args, term, use_existential_projection_new_instead: () }