lib/qx/tool/compiler/app/Application.js
function(value) {
      if (!value) {
        return null;
      }
      if (!qx.lang.Type.isArray(value)) {
        return [ value ];
      }
      return value;
    }
function(value) {
      if (!value) {
        return null;
      }
      if (!qx.lang.Type.isArray(value)) {
        return [ value ];
      }
      return value;
    }
Transforms values to make sure that they are an array (and never null)