d_bin'>bin</span><span class='rparen'>)</span>
<span class='kw'>rescue</span> <span class='const'>NameError</span> <span class='op'>=&gt;</span> <span class='id identifier rubyid_e'>e</span>
  <span class='id identifier rubyid_raise'>raise</span> <span class='tstring'><span class='tstring_beg'>&quot;</span><span class='tstring_content'>STEPS must be defined: </span><span class='embexpr_beg'>#{</span><span class='id identifier rubyid_e'>e</span><span class='period'>.</span><span class='id identifier rubyid_m