ubyid_header_params'>header_params</span> <span class='op'>=</span> <span class='id identifier rubyid_opts'>opts</span><span class='lbracket'>[</span><span class='symbol'>:header_params</span><span class='rbracket'>]</span> <span class='op'>||</span> <span class='lbrace'>{</span><span class='rbrace'>}</span>
  <span class='comment'># HTTP header &#39;Accept&#39; (if needed)
</span>  <span class='id identifier rubyid_header_params'>header_params</span><span class='lbracket'>[</span><span class='tstring'><spa