xs xselementdeclaration xsterm xstypedefinition gettypedefinition getscope xscomplextypedefinition getenclosingctdefinition getconstrainttype getconstraintvalue getactualvc xsexception getactualvctype xsexception getitemvaluetypes xsexception getnillable xsnamedmap getidentityconstraints xselementdeclaration getsubstitutiongroupaffiliation issubstitutiongroupexclusion exclusion getsubstitutiongroupexclusions isdisallowedsubstitution disallowed getdisallowedsubstitutions getabstract xsannotation xsobjectlist getannotations