public void TestCoreStandardFromIdentifier()
        {
            StandardIdentifier identifier = StandardIdentifierTranslation.StandardStringToStandardIdentifier(elaStandardString);
            var coreStandardsRowCcss      = ImmutableArray.Create(
                CoreStandardsRow.Create(
                    subjectCode: "ELA",
                    key: "3-l|4-6|6.SL.2",
                    name: "",
                    description: "CCSS Desc",
                    levelType: "CCSS",
                    identifier: identifier));

            var coreStandardsRowTarget = ImmutableArray.Create(
                CoreStandardsRow.Create(
                    subjectCode: "ELA",
                    key: "4-6|3-6",
                    name: "",
                    description: "Target Desc",
                    levelType: "Target",
                    identifier: identifier));

            CoreStandardsXml coreStandardsXml = new CoreStandardsXml(coreStandardsRowTarget, coreStandardsRowCcss);
            CoreStandards    core             = StandardIdentifierTranslation.CoreStandardFromIdentifier(coreStandardsXml, identifier);

            Assert.NotNull(core);
            Assert.Equal(core.CommonCoreStandardsId, "6.SL.2");
            Assert.Equal(core.TargetId, "4-6");
            Assert.Equal(core.TargetIdLabel, "4");
            Assert.Equal(core.TargetDescription, "Target Desc");
            Assert.Equal(core.CommonCoreStandardsDescription, "CCSS Desc");
        }