     1	public class A extends DeviceImpl implements TangoConst
     2	{
     3		public void my_cmd(long input)
     4		{
     5		}
     6	}
     7	
     8	public class B extends A implements TangoConst
     9	{
    10		public void my_cmd(long input)
    11		{
    12		}
    13	}
