code: function _flattenSillyArray(parentObj, key, requestContext) {
    //debug('_flattenSillyArray', key, parentObj[key]);
  
    var subKey = key.replace(/Array$/, '');   // e.g. 'Order' from 'OrderArray'
    var newKey = subKey + 's';                // e.g. 'Orders'
  
    // `compact` avoids creating an array of `[undefined]`,
    // from input `['']` when xml "array" element was empty.
    parentObj[newKey] = _.compact(parentObj[key][0][subKey]);
    delete parentObj[key];
  
    // might have already been flattened...
    if (!_.isArray(parentObj[newKey])) parentObj[newKey] = [ parentObj[newKey] ];
  
    parentObj[newKey] = parentObj[newKey].map(function(subObj) {
      return exports.flatten(subObj, -1, requestContext);
    });
  
    return newKey;
  }
docs: /*
  convert `OrderArray: [ Order: [...] ]` structure to `Orders: []`.
  @param parentObj: the obj *containing* the key to be restructured.
  @param key: the key within the object to fix.
  modifies byref.
  @return new key.