// Set only newInputs - still not updated
        item.setNewInputs(new String[] { "new" });
        assertFalse(item.isUpdated());

        // Set both newInputs and newOutput - now updated
        item.setNewOutput("newOutput");
        assertTrue(item.isUpdated());

        // Set newInputs to null - not updated
        item.setNewInputs(null);
        assertFalse(item.isUpdated());
    }

        CharMappingItem updateItem1 = item1.get();
        updateItem1.setNewInputs(new String[] { "m", "n" });
        updateItem1.setNewOutput("o");

        // Create another update for the same item
        CharMappingItem updateItem2 = new CharMappingItem(1L, new String[] { "x", "y" }, "z");
        updateItem2.setNewInputs(new String[] { "p", "q" });
        updateItem2.setNewOutput("r");

        return getEntity(form).map(entity -> {
            final String[] newInputs = splitLine(form.inputs);
            validateMappingString(action, newInputs, "inputs", hook);
            entity.setNewInputs(newInputs);
            final String newOutput = form.output;
            entity.setNewOutput(newOutput);
            return entity;
        });
    }

        return getEntity(form).map(entity -> {
            final String[] newInputs = splitLine(form.inputs);
            validateSynonymString(action, newInputs, "inputs", hook);
            entity.setNewInputs(newInputs);
            final String[] newOutputs = splitLine(form.outputs);
            validateSynonymString(action, newOutputs, "outputs", hook);
            entity.setNewOutputs(newOutputs);
            return entity;