- <reference id="backend" interface="org.argeo.slc.geotools.Backend" />\r
- <list id="dataStores" interface="org.geotools.data.DataStore" />\r
+ <reference id="backend" interface="org.argeo.slc.geotools.Backend" cardinality="0..1"/>\r
+ <list id="dataStores" interface="org.geotools.data.DataStore" cardinality="0..N"/>\r