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diff --git a/src/catch2/interfaces/catch_interfaces_test_invoker.hpp b/src/catch2/interfaces/catch_interfaces_test_invoker.hpp
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+++ b/src/catch2/interfaces/catch_interfaces_test_invoker.hpp
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+
+//              Copyright Catch2 Authors
+// Distributed under the Boost Software License, Version 1.0.
+//   (See accompanying file LICENSE.txt or copy at
+//        https://www.boost.org/LICENSE_1_0.txt)
+
+// SPDX-License-Identifier: BSL-1.0
+#ifndef CATCH_INTERFACES_TEST_INVOKER_HPP_INCLUDED
+#define CATCH_INTERFACES_TEST_INVOKER_HPP_INCLUDED
+
+namespace Catch {
+
+    class ITestInvoker {
+    public:
+        virtual void prepareTestCase();
+        virtual void tearDownTestCase();
+        virtual void invoke() const = 0;
+        virtual ~ITestInvoker(); // = default
+    };
+
+} // namespace Catch
+
+#endif // CATCH_INTERFACES_TEST_INVOKER_HPP_INCLUDED