$ java -cp classes:asm-9.11.1.jar... demo.GenerateDemo target/gen/demo      (25.0.5+8-LTS)
generated 501 bytes, major version 69 (wrote target/gen/demo/Generated.class)
ClassFile.verify(bytes) -> 0 problem(s)
PASS verify() finds nothing wrong with the generated class
defineClass       -> demo.Generated  hidden=false  findable by name=true
[defineClass] add(2,3)=5  hello()=Hello from generated bytecode  sumTo(100)=5050  classify(-4)=negative  classify(4)=non-negative
PASS defineClass: generated methods return the right values
defineHiddenClass -> name starts with 'demo.Generated/': true  hidden=true  distinct from the normal class=true
[hidden] add(2,3)=5  hello()=Hello from generated bytecode  sumTo(100)=5050  classify(-4)=negative  classify(4)=non-negative
PASS hidden: generated methods return the right values
Class.forName(hidden name) -> ClassNotFoundException (hidden classes cannot be found by name)
PASS hidden class is hidden, the other is not
exit=0