Remi's suggestion: (see https://mail.openjdk.java.net/pipermail/core-libs-dev/2019-August/061923.html )

Proxy class computes all declared methods and stores them as static final fields. It can replace these static field initialization with constant dynamic.

The idea is that a ldc on a constant dynamic with bootstrap method that takes a MethodHandle as parameter (as boostrap argument) can return the corresponding Method by using Lookup.revealDirect + reflectAs.