pan> <span class='id identifier rubyid_validate!'>validate!</span>
  <span class='id identifier rubyid_missing_properties'>missing_properties</span> <span class='op'>=</span> <span class='lbracket'>[</span><span class='rbracket'>]</span>
  <span class='const'><span class='object_link'><a href="#REQUIRED_PROPERTIES-constant" title="Juno::Config::REQUIRED_PROPERTIES (constant)">REQUIRED_PROPERTIES</a></span></span><span class='period'>.</span><span class='id identifier rubyid_each'>each</span> <span class='kw