an><span class='tstring_end'>&#39;</span></span>
  <span class='id identifier rubyid_invalid_properties'>invalid_properties</span> <span class='op'>=</span> <span class='const'>Array</span><span class='period'>.</span><span class='id identifier rubyid_new'>new</span>
  <span class='kw'>if</span> <span class='ivar'>@seed_id</span><span class='period'>.</span><span class='id identifier rubyid_nil?'>nil?</span>
    <span class='id identifier rubyid_invalid_properties'>invalid_properties</span><span class='peri