syntax_data: {"ast_node_type":"other","tokens":[{"end":99,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // the only allowed region constraints may be constraints also present on the default impl.
context_before:         // assumes that specializing impls have to be always applicable, meaning that
context_after:         if lhs_evaluation.must_apply_modulo_regions() {