java.java

private class T extends ClassLoader {
        @Override
        protected Class<?> findClass(String name) throws ClassNotFoundException
        {
            ClassNode node = readClassNode(name);

            // better actual set of default composable contexts
            for (MethodNode m: node.methods) {
                // set in the list, you know what I mean
                m = transform(new WholeMethodContext(m));
            }
            for (FieldNode f : node.fields) {
                f = transform(new WholeFieldContext(f));
            }
            node = transform(new FullClassContext(node));

            return makeClass(node);
        }

        void transform(IContext c) {
            if(moreThan1Transformer(c)) {
                throw new IllegalStateException();
            }
            if(oneTransformer(c)) {
                getTransformer(c).run(c);
            }
        }
    }

    class FancyPredicateMethodContext implements ITransformer {
        // defines its own set of sub-method contexts, loads all of them and does things to manage conflicts inside run()
    }