s='rparen'>)</span>
    <span class='id identifier rubyid_fail'>fail</span> <span class='const'>ArgumentError</span><span class='comma'>,</span> <span class='tstring'><span class='tstring_beg'>&quot;</span><span class='tstring_content'>The input argument (attributes) must be a hash in `Coinbase::Client::SignatureCreationEvent` initialize method</span><span class='tstring_end'>&quot;</span></span>
  <span class='kw'>end</span>

  <span class='comment'># check to see if the attribute exists and convert string