assertNotNull(impl, "Implementation instance should not be null");
        assertTrue(SessionSetupHandler.class.isInstance(impl), "Instance should be assignable to interface");
        assertTrue(SessionSetupHandler.class.isAssignableFrom(impl.getClass()), "Type should be assignable");
    }

    @Test
    @DisplayName("Edge: null is not an instance of the interface")
    void testNullIsNotInstance() {
        // Assert

        SmbTreeImpl unwrapped = tree.unwrap(SmbTreeImpl.class);
        assertEquals(tree, unwrapped);
        // Test unwrapping to a non-assignable type should fail
        assertThrows(ClassCastException.class, () -> {
            // Create a mock class that extends SmbTree but is not assignable from SmbTreeImpl
            class CustomSmbTree extends SmbTreeImpl {
                CustomSmbTree() {

                    isProperties = Properties.class.isAssignableFrom(Class.forName(param.getType()));
                } catch (ClassNotFoundException e) {
                    // assume it is not assignable from Collection or Map
                }
            }

            messageBuffer.append("Inside the definition for plugin '");
            messageBuffer.append(mojo.getPluginDescriptor().getArtifactId());