docs: function shuffleObjArrays( map, options ) {
      var newMap = !! options && true === options.copy ? {} : map;
      var copyNonArrays = !! options && true === options.copy && true === ( options.copyNonArrays || options.copyNonArray );
      var values = null;
      for ( var key in map ) {
          values = map[ key ];
          if ( isArray( values ) ) {
              newMap[ key ] = shuffle( values, options );
          } else if ( copyNonArrays ) {
              newMap[ key ] = map[ key ];
          }
      }
      return newMap;
  }