Issue with swift and symbol lookup

lib.swift

// swiftc lib.swift -emit-library -o libtouchidswift.dylib

@_cdecl("function")
public func function() {
}

// $ nm libswift.dylib
//     0000000000003fb0 T _$s5swift8functionyyF
//     0000000000003fb6 s ___swift_reflection_version
//     0000000000003fa0 T _function
//                      U dyld_stub_binder

Main.java

import jdk.incubator.foreign.CLinker;
import jdk.incubator.foreign.FunctionDescriptor;
import jdk.incubator.foreign.MemoryAddress;
import jdk.incubator.foreign.ResourceScope;

import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodType;
import java.util.HexFormat;

public class Main {

  public static void main(String[] args) throws Throwable {
    System.load("/Users/bric3/opensource/sandbox/libswift.dylib");

    var f = CLinker.getInstance()
                   .downcallHandle(
                       SymbolLookup.loaderLookup().lookup("_function").get(), // <= NPE, symbol not found
                       MethodType.methodType(void.class),
                       FunctionDescriptor.ofVoid()
                   );

    try (var scope = ResourceScope.newConfinedScope()) {
      f.invokeExact();
    }
  }
}