syntax_data: {"ast_node_type":"other","tokens":[{"end":91,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// its provisional result is invalid. Actually discarding provisional cache entries in
context_before:     /// In case the popped cycle head failed to reach a fixpoint anything which depends on
context_after:     /// this case would cause hangs, so we instead change the result of dependant provisional