RelationshipReference WriteRead(string ics)
        {
            var rref = new RelationshipReference(new ContentLine(ics));
            var s = new StringWriter();
            rref.WriteIcs(IcsWriter.Create(s));

            return new RelationshipReference(new ContentLine(s.ToString()));
        }
        public void FromContentLine()
        {
            var rref = new RelationshipReference(new ContentLine("RELATED-TO:[email protected]"));
            Assert.AreEqual("*****@*****.**", rref.OtherUri);
            Assert.AreEqual(Relationship.Parent, rref.Relationship);

            rref = new RelationshipReference(new ContentLine("RELATED-TO;RELTYPE=SIBLING:[email protected]"));
            Assert.AreEqual("*****@*****.**", rref.OtherUri);
            Assert.AreEqual(Relationship.Sibling, rref.Relationship);
        }