verify(negotiationRequest, times(1)).isSigningEnforced();
    }

    @Test
    @DisplayName("Test multiple calls to isSigningEnforced")
    void testMultipleCallsToIsSigningEnforced() {
        // Given
        when(negotiationRequest.isSigningEnforced()).thenReturn(true).thenReturn(false).thenReturn(true);

        // When & Then