public void setParentGroupId(String parentGroupId) {
        this.parentGroupId = parentGroupId;
    }
@Test
    public void testSetParentGroupId() {
        String parentGroupId = "org.owasp";
        Model instance = new Model();
        instance.setParentGroupId(parentGroupId);
        assertEquals("org.owasp", instance.getParentGroupId());
    }