ss='tstring'><span class='tstring_beg'>&#39;</span><span class='tstring_content'>application/json</span><span class='tstring_end'>&#39;</span></span><span class='rbracket'>]</span><span class='rparen'>)</span>
  <span class='kw'>if</span> <span class='op'>!</span><span class='id identifier rubyid_content_type'>content_type</span><span class='period'>.</span><span class='id identifier rubyid_nil?'>nil?</span>
    <span class='id identifier rubyid_header_params'>header_params</span><span class='lbracket'>[</s