DirContext subSchema = (DirContext) schema.lookup("");
assertSame(schema, subSchema);
subSchema = (DirContext) schema.lookup("classdefinition");
assertNotSame(schema, subSchema);
NamingEnumeration<NameClassPair> namingEnum = subSchema.list("");
NameClassPair pair;
int count = 0;
while (namingEnum.hasMore()) {
pair = namingEnum.next();
count++;