xml - Does xmlns:mstns in an XSD imply it was generated from a C# class -

i have received xsd schema starts (actual values replaced ...):

<xs:schema targetnamespace="..."            elementformdefault="..."            xmlns="..."            xmlns:mstns="..."            xmlns:xs="..."> 

does presence of xmlns:mstns mean xsd generated c# class using xsd.exe? question what's xmlns:mstns in xsd? implies added xmlserializer, , know you can create xsd c# class.