code: public static void unbind(final Context _ctx,
                                final String _nameStr)
          throws NamingException
      {
          final Name names = _ctx.getNameParser("").parse(_nameStr);
          if (names.size() > 0)  {
              _ctx.unbind(names);
          }
      }
docs: Unbinds given <code>_nameStr</code> from <code>_ctx</code>.
  
  @param _ctx      naming context
  @param _nameStr  name to unbind
  @throws NamingException if unbind failed