Pattern for ensuring that an optional collection passed into an argument is immutable

Foo.java

import java.util.Optional;
import java.util.LinkedHashSet;
import java,util.Collections;

public final class Foo {

    private final Optional<Set<String>> args;
    
    public Foo(Optional<Set<String>> args) {
        this.args = args.map(LinkedHashSet::new).map(Collections::unmodifiableSet);
    }
}