public MeshSerializer()
{
// add the supported .mesh versions
implementations.Add( "[MeshSerializer_v1.10]", new MeshSerializerImplv11() );
implementations.Add( "[MeshSerializer_v1.20]", new MeshSerializerImplv12() );
implementations.Add( "[MeshSerializer_v1.30]", new MeshSerializerImplv13() );
implementations.Add( "[MeshSerializer_v1.40]", new MeshSerializerImplv14() );
implementations.Add( currentVersion, new MeshSerializerImpl() );
}