@Test public void getIndex() { assertThat(level.getIndex()).isEqualTo(1); }
@Override public int getIndex() { return 1; }
EasyLevelOne extends AbstractEasyLevel { @Override public int getIndex() { return 1; } }
EasyLevelOne extends AbstractEasyLevel { @Override public int getIndex() { return 1; }  }
EasyLevelOne extends AbstractEasyLevel { @Override public int getIndex() { return 1; }  @Override GameSession create(Configuration config); @Override int getIndex(); }
EasyLevelOne extends AbstractEasyLevel { @Override public int getIndex() { return 1; }  @Override GameSession create(Configuration config); @Override int getIndex();  }