-XBT_PUBLIC() Checker* createLivenessChecker(Session& session);
-XBT_PUBLIC() Checker* createSafetyChecker(Session& session);
-XBT_PUBLIC() Checker* createCommunicationDeterminismChecker(Session& session);
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+XBT_PUBLIC Checker* createLivenessChecker(Session& session);
+XBT_PUBLIC Checker* createSafetyChecker(Session& session);
+XBT_PUBLIC Checker* createCommunicationDeterminismChecker(Session& session);