'>do</span> <span class='op'>|</span><span class='id identifier rubyid_property'>property</span><span class='op'>|</span>
    <span class='id identifier rubyid_missing_properties'>missing_properties</span><span class='period'>.</span><span class='id identifier rubyid_push'>push</span><span class='lparen'>(</span><span class='id identifier rubyid_property'>property</span><span class='rparen'>)</span> <span class='kw'>if</span> <span class='id identifier rubyid_send'>send</span><span class='lparen'>(</span><s