code: @Test public void testLoggerMultipleChildren(){
    assertEquals(1,instanceCount());
    Logger xy0=lc.getLogger("x.y0");
    LoggerTestHelper.assertNameEquals(xy0,"x.y0");
    Logger xy1=lc.getLogger("x.y1");
    LoggerTestHelper.assertNameEquals(xy1,"x.y1");
    LoggerTestHelper.assertLevels(null,xy0,Level.DEBUG);
    LoggerTestHelper.assertLevels(null,xy1,Level.DEBUG);
    assertEquals(4,instanceCount());
    for (int i=0; i < 100; i++) {
      Logger xy_i=lc.getLogger("x.y" + i);
      LoggerTestHelper.assertNameEquals(xy_i,"x.y" + i);
      LoggerTestHelper.assertLevels(null,xy_i,Level.DEBUG);
    }
    assertEquals(102,instanceCount());
  }
  