sclass LASClassDef {
  settable S userGivenName;
  new L<FieldDef> fields;
  settable S classDefPrefix = "userCode.";
  
  settable Class renderedClass;
  
  sclass FieldDef {
    settable S name;
    settable Class type;
  }
  
  S structForHash() {
    ret struct(litorderedmap(+userGivenName, +fields));
  }
  
  simplyCached S classHash() {
    ret md5(structForHash());
  }
  
  S finalClassName() {
    ret classDefPrefix() + or2(userGivenName, "C") + "_" + classHash();
  }
}