public void RecordFieldUtility_GetFirstSubField_1() { RecordField field = _GetField(); SubField subField = RecordFieldUtility.GetFirstSubField(field, 'a'); Assert.IsNotNull(subField); subField = RecordFieldUtility.GetFirstSubField(field, 'b'); Assert.IsNotNull(subField); subField = RecordFieldUtility.GetFirstSubField(field, 'x'); Assert.IsNull(subField); }