presto-main/src/main/java/io/prestosql/util/CompilerUtils.java/CompilerUtils/defineClass
class CompilerUtils:    public static <T> Class<? extends T> defineClass(ClassDefinition classDefinition, Class<T> superType, DynamicClassLoader classLoader)
    {
        log.debug("Defining class: %s", classDefinition.getName());
        return classGenerator(classLoader).defineClass(classDefinition, superType);
    }