code: function( name, startFunc, extra ) {
  		if ( extra === undefined && ! munit.isFunction( startFunc ) ) {
  			extra = startFunc;
  			startFunc = undefined;
  		}
  
  		if ( munit.isError( extra ) ) {
  			extra = extra.message;
  		}
  
  		return this.ok( name, false, startFunc || this.fail, extra );
  	}
docs: Shortcut for explicit failures