public List<ExpressionElement> getExpressionElements() {
        return expressionElements;
    }
@Test
    public void getExpressionElementsWithoutClass_missingExpression() {
        original = new FactMapping("FACT_ALIAS", FactIdentifier.create("FI_TEST", "com.test.Foo"), new ExpressionIdentifier("EI_TEST", GIVEN));
        
        assertThatThrownBy(original::getExpressionElementsWithoutClass)
                .isInstanceOf(IllegalStateException.class)
                .hasMessage("ExpressionElements malformed");
        assertThat(original.getExpressionElements()).hasSize(0);

    }