I have certain problems with templates (I'm not sure how to name it). For example such code is allowed:

	public class TestEntry : Map.Entry<string, string> {
		public TestEntry (string key, string value) {
			this._key = key;
			this.value = value;
		}
		
		public override string key { get {return _key; } }
		private string _key;
		public override string value { get; set; }
	}

tests/testmap.vala:516.3-516.30: error: Type and/or accessors of overriding property `MapTests.TestEntry.value' do not match overridden property `Gee.Map.Entry.value'.
		public override string value { get; set; }
		^^^^^^^^^^^^^^^^^^^^^^^^^^^^
tests/testmap.vala:516.3-516.30: error: MapTests.TestEntry.value: no suitable property found to override
		public override string value { get; set; }
		^^^^^^^^^^^^^^^^^^^^^^^^^^^^
tests/testmap.vala:514.3-514.28: error: Type and/or accessors of overriding property `MapTests.TestEntry.key' do not match overridden property `Gee.Map.Entry.key'.
		public override string key { get {return _key; } }
		^^^^^^^^^^^^^^^^^^^^^^^^^^
tests/testmap.vala:514.3-514.28: error: MapTests.TestEntry.key: no suitable property found to override
		public override string key { get {return _key; } }
		^^^^^^^^^^^^^^^^^^^^^^^^^^
Compilation failed: 4 error(s), 0 warning(s)

but:

	public class TestEntry<K,V> : Map.Entry<K,V> {
		public TestEntry (K key, V value) {
			this._key = key;
			this.value = value;
		}
		
		public override K key { get {return _key; } }
		private K _key;
		public override V value { get; set; }
	}

is allowed.

Also commented out sections in attachments to Bug 589521 (i.e. Add-SortedMap-interface.patch - now all obsoletes).