(static) BaseExtension <.cctor>b__0()
      (static) void Initialize()
      (ctor) WhereExtension()
      ObjectConditional Conditional( get; )
      ExtensionInfo Info( get; )
      virtual bool IsValid( object obj )
      virtual void Optimize( Mobile from, Type baseType, ref AssemblyEmitter assembly )
      virtual void Parse( Mobile from, string[] arguments, int offset, int size )