private Creator performLookup(Class component_type, Object key, Class type){
final String lookup_key = (Misc.getTypeName(component_type)+'.'+key)
.replace('.', '/').replace('$', '/');
Object v = the_map.get(lookup_key);
if(v==null){
final Recovery rec = Monad.onException(ComponentResolutionException.class,
Monad.fail("failed to lookup " + lookup_key));
return Components.useProperty(component_type, key, type)
.recover(rec);
}
else{