7</span>

<span class='kw'>def</span> <span class='kw'>self</span><span class='period'>.</span><span class='id identifier rubyid__merge_ids'>_merge_ids</span><span class='lparen'>(</span><span class='id identifier rubyid_association'>association</span><span class='rparen'>)</span>
  <span class='id identifier rubyid_association'>association</span><span class='period'>.</span><span class='id identifier rubyid_merge'>merge</span><span class='lparen'>(</span>
    <span class='lbrace'>{</span>
      <span class