ifier rubyid_transaction'>transaction</span><span class='period'>.</span><span class='id identifier rubyid_signed?'>signed?</span>

      <span class='id identifier rubyid_transaction'>transaction</span><span class='period'>.</span><span class='id identifier rubyid_sign'>sign</span><span class='lparen'>(</span><span class='id identifier rubyid_key'>key</span><span class='rparen'>)</span>
      <span class='ivar'>@model</span> <span class='op'>=</span> <span class='const'><span class='object_link'><a href=".