ar'>@activation_epoch</span><span class='period'>.</span><span class='id identifier rubyid_nil?'>nil?</span>
    <span class='id identifier rubyid_invalid_properties'>invalid_properties</span><span class='period'>.</span><span class='id identifier rubyid_push'>push</span><span class='lparen'>(</span><span class='tstring'><span class='tstring_beg'>&#39;</span><span class='tstring_content'>invalid value for &quot;activation_epoch&quot;, activation_epoch cannot be nil.</span><span class='tstring_end'>&#39;</sp