InvokedynamicRewriting.scalaLambdaDeserializeResolution handles the scala.runtime.LambdaDeserialize.bootstrap bootstrap method. Currently, it only supports InvokeStaticMethodHandles, because the implementation of ClassFileFactory.DeserializeLambdaProxy can only process these.
More recent Scala compilers, however, also produce InvokeSpecialMethodHandles, which we should be able to process.
However, I can't find the bytecode that is referenced in the ClassFileFactory, making it hard to adapt it correctly.