protected boolean isFactMappingValueToSkip(FactMappingValue factMappingValue) {
        return factMappingValue.getRawValue() == null;
    }
@Test
    public void isFactMappingValueToSkip() {
        FactIdentifier factIdentifier = FactIdentifier.create("MyInstance", String.class.getCanonicalName());
        ExpressionIdentifier expressionIdentifier = ExpressionIdentifier.create("MyProperty", FactMappingType.GIVEN);

        FactMappingValue factMappingValueWithValidValue = new FactMappingValue(factIdentifier, expressionIdentifier, VALUE);
        assertThat(abstractRunnerHelper.isFactMappingValueToSkip(factMappingValueWithValidValue)).isFalse();

        FactMappingValue factMappingValueWithoutValue = new FactMappingValue(factIdentifier, expressionIdentifier, null);
        assertThat(abstractRunnerHelper.isFactMappingValueToSkip(factMappingValueWithoutValue)).isTrue();
    }