warn'>warn</span> <span class='tstring'><span class='tstring_beg'>&quot;</span><span class='tstring_content'>addItemBefore() is deprecated; use insertItem() instead</span><span class='tstring_end'>&quot;</span></span>
  <span class='id identifier rubyid_insertItem'>insertItem</span><span class='lparen'>(</span><span class='id identifier rubyid_other'>other</span><span class='comma'>,</span> <span class='id identifier rubyid_other'>other</span><span class='period'>.</span><span class='id identifier rubyid_pa