




 
The function 
list-classes
 collects all the classes below 
root-class 
(which defaults to standard-db-object) that are connected to the given database specified by 
database
, and which satisfy the 
test
 function. The default for the 
test
 argument is 
identity
.
By default, 
list-classes
 returns a list of all the classes connected to the default database, *default-database*.