public void SetMetaTest()
        {
            var manager = new HybridResourceManager(GetType());

            // not existing base: missing manifest exception
            Throws <MissingManifestResourceException>(() => manager.GetMetaObject("unknown"));

            // setting something without culture sets the invariant language so there is no exception anymore
            manager.SetMetaObject("StringValue", "String invariant");
            Assert.IsNotNull(manager.GetMetaObject("StringValue"));
            Assert.IsNull(manager.GetMetaObject("unknown"));

            // this creates a derived en resource set
            manager.SetMetaObject("enOnly", 42, en);

            // however, there is no resource fallback for metadata
            Assert.IsNull(manager.GetMetaObject("StringValue", en));

            // in compiled mode any set operation throws InvalidOperationException and the changes disappear
            manager.Source = ResourceManagerSources.CompiledOnly;
            Throws <InvalidOperationException>(() => manager.SetMetaObject("SetTest", "does not work"));
            Assert.IsFalse(manager.IsModified);
            Assert.IsNull(manager.GetMetaString("StringValue"));

            // is we change to non-compiled mode, changes re-appear
            manager.Source = ResourceManagerSources.ResXOnly;
            Assert.IsTrue(manager.IsModified);
            Assert.IsNotNull(manager.GetMetaString("StringValue"));
        }