code: function _fnExternApiFunc (fn)
  		{
  			return function() {
  				var args = [_fnSettingsFromNode( this[DataTable.ext.iApiIndex] )].concat(
  					Array.prototype.slice.call(arguments)
  				);
  				return DataTable.ext.internal[fn].apply( this, args );
  			};
  		}
docs: /*
  This is really a good bit rubbish this method of exposing the internal methods
  publicly... - To be fixed in 2.0 using methods on the prototype
   
  Create a wrapper function for exporting an internal functions to an external API.
  @param {string} fn API function name
  @returns {function} wrapped function
  @memberof DataTable#internal