What is the best way to design in Java 8 ordered pipeline scheme on different methods

My question is regarding design

I'm trying to design my pipeline based of different methods.

Suppose my Class :

public class Pipeline {

    public Object method1AAA(String a){
        // impl1..
    }


    public Object method2BBB(List<Object> list){
        // impl2..
    }

    public Object method3CCC(Map<String,String> map, Object otherStuff){
        // impl3..
    }

    // other different methods ....
}

I want to follow this concept http://qrman.github.io/posts/2017/02/09/pipeline-pattern-plumber-quest

But my difference is that I use the only 1 class with multiple methods, if i had different services I would create new class to each service with interface implementation as in the link , but my purpose is create list of order methods inside 1 class that will iterate and execute them...

I was thinking about some method reference based on java 8

like described here : https://www.codementor.io/eh3rrera/using-java-8-method-reference-du10866vx

basic idea ?

List<> list = new ArrayList<>();
list.add(::method1)
list.add(::method2)
list.add(::method3) ...

forEach ..list -> execute

Thanks a lot