code: function( tabConfig ) {
  			if ( !tabConfig )
  				tabConfig = defaultTabConfig;
  
  			var allowedAttrs = [];
  			if ( tabConfig.id )
  				allowedAttrs.push( 'id' );
  			if ( tabConfig.dir )
  				allowedAttrs.push( 'dir' );
  
  			var allowed = '';
  
  			if ( allowedAttrs.length )
  				allowed += '[' + allowedAttrs.join( ',' ) +  ']';
  
  			if ( tabConfig.classes )
  				allowed += '(*)';
  			if ( tabConfig.styles )
  				allowed += '{*}';
  
  			return allowed;
  		}
docs: Returns allowed content rule for the content created by this plugin.