svoid gazelle_addHelpers(GazelleEvalContext ctx, O... _) {
  if (ctx.engine.hasHelpers) ret;
  print("Adding helpers");
  ctx.engine.hasHelpers = true;
  gazelle_addHelperTablesToRules(ctx.engine);
  gazelle_addVarSplittersToRules(ctx.engine, _);
  gazelle_addVarDiscriminators(ctx.engine, _);
  gazelle_addVarConvertersToRules(ctx.engine, _);
  gazelle_addCalculationFunctionsToRules(ctx.engine, _);
  gazelle_addRespondToHumanOnlyHelpers(ctx.engine, _);
  gazelle_addForbiddenBindingHelpers(ctx.engine, _);
}