docs: function regexifyPropertiesWithWildcards( validators ) {
  		var patterns = [],
  			i;
  
  		for ( i in validators ) {
  			if ( i.indexOf( '*' ) > -1 )
  				patterns.push( i.replace( /\*/g, '.*' ) );
  		}
  
  		if ( patterns.length )
  			return new RegExp( '^(?:' + patterns.join( '|' ) + ')$' );
  		else
  			return null;
  	}