dotnet-core/release-notes/3.0/preview/api-diff/preview6/3.0-preview6_System.Xml.Schema.md

System.Xml.Schema

 namespace System.Xml.Schema {
     public abstract class XmlSchemaDatatype {
-        protected XmlSchemaDatatype();

     }
     public abstract class XmlSchemaGroupBase : XmlSchemaParticle {
-        protected XmlSchemaGroupBase();

     }
 }