pan class='tstring_content'>[DEPRECATED] the `valid?` method is obsolete</span><span class='tstring_end'>&#39;</span></span>
  <span class='kw'>return</span> <span class='kw'>false</span> <span class='kw'>if</span> <span class='ivar'>@network_id</span><span class='period'>.</span><span class='id identifier rubyid_nil?'>nil?</span>
  <span class='kw'>return</span> <span class='kw'>false</span> <span class='kw'>if</span> <span class='ivar'>@asset_id</span><span class='period'>.</span><span class='id identifie