<schemalist> <!-- c extends b extends a --> <schema id='a'/> <schema id='b' extends='a'/> <schema id='c' extends='b'/> <!-- lists of each --> <schema id='la' list-of='a'/> <schema id='lb' list-of='b'/> <schema id='lc' list-of='c'/> <!-- extend 'la', override the list-of to 'b' --> <schema id='lb-la' list-of='b' extends='la'/> <!-- extend 'la', override the list-of to 'c' --> <schema id='lc-la' list-of='c' extends='la'/> <!-- extend 'lb', override the list-of to 'c' --> <schema id='lc-lb' list-of='c' extends='lb'/> <!-- extend 'lb-la', override the list-of to 'c' --> <schema id='lc-lb-la' list-of='c' extends='lb-la'/> </schemalist>