根据linkIftypesafeEnumBaseissettoxsd:string,itwouldbeaglobalwaytospecifythatallsimpletypedefinitionsderivingdirectlyorindirectlyfromxsd:stringandhavingenumerationfacetsshouldbeboundbydefaulttoatypesafeenum.IftypesafeEnumBaseissettoanemptystring,"",nosimpletypedefinitionswouldeverbeboundtoatypesafe