[BUG] Lombok tries to apply an extension method to a wrong type

[vbarhatov]

I use @ExtensionMethod annotation to add some methods to collections.
I declare an extension method filter() for List<T> but Lombok tries to apply this method to Stream<T> type.

How to reproduce

import java.util.Arrays;
import java.util.List;
import java.util.function.Predicate;
import java.util.stream.Stream;
import lombok.experimental.ExtensionMethod;

@ExtensionMethod(Main.ExtensionMethods.class)
public class Main
{
    public static class ExtensionMethods
    {
        public static <T> Stream<T> filter(List<T> list, Predicate<? super T> predicate)
        {
            return list.stream().filter(predicate);
        }
    }

    public static void main(String[] args)
    {
        List<Integer> list = Arrays.asList(1, 2, 3);

        Stream<Integer> stream = list.filter(i -> true);
        Stream<Integer> itWorks = stream.filter(i -> true);

        Stream<Integer> itDoesntWork = list.filter(i -> true).filter(i -> true);
    }
}

Expected behavior

It should work.

Actual behavior
Lombok returns the following error during a compilation process:

error: method filter in class ExtensionMethods cannot be applied to given types;
  required: List<T>,Predicate<? super T>
  found: Stream<Integer>,(i)->true
  reason: no instance(s) of type variable(s) T exist so that Stream<T> conforms to List<T>
  where T is a type-variable:
    T extends Object declared in method <T>filter(List<T>,Predicate<? super T>)
1 error

Version info:

• Lombok version: I tried two versions – 16.16, 18.18
• Platform Gradle, IntelliJ IDEA,
• JVM: 1.8.0_252 (Amazon.com Inc. 25.252-b09), 11.0.7 (Amazon.com Inc. 11.0.7+10-LTS)

[Rawi01]

Thanks for the reproducer, should be fixed with the linked PR.