code: function( arr, fillWith ) {
  			var obj = {};
  
  			if ( arguments.length == 1 )
  				fillWith = true;
  
  			for ( var i = 0, l = arr.length; i < l; ++i )
  				obj[ arr[ i ] ] = fillWith;
  
  			return obj;
  		}
docs: Converts an array to an object by rewriting array items
  to object properties.
  
  var arr = [ 'foo', 'bar', 'foo' ];
  console.log( CKEDITOR.tools.convertArrayToObject( arr ) );
  // -> { foo: true, bar: true }
  console.log( CKEDITOR.tools.convertArrayToObject( arr, 1 ) );
  // -> { foo: 1, bar: 1 }
  
  @since 4.1
  @param {Array} arr The array to be converted to an object.
  @param [fillWith=true] Set each property of an object to `fillWith` value.