public void MoreOverrides()
{
var extPlist1 = new PList <string, string>(_pList);
extPlist1.Remove("prop1");
var extPlist2 = new PList <string, string>(extPlist1);
Assert.False(extPlist2.ContainsKey("prop1"));
extPlist1["prop6"] = "value6";
extPlist1["prop7"] = "value7";
extPlist2["prop8"] = "value8";
Assert.Equal(7, extPlist2.Count);
Assert.Equal(6, extPlist1.Count);
extPlist1.Clear();
Assert.Equal("value1", extPlist2["prop1"]);
Assert.False(extPlist1.ContainsKey("prop6"));
Assert.Equal(6, extPlist2.Count);
Assert.Equal(5, extPlist1.Count);
}
