// "Replace nested function call with andThen call" "true-preview" import java.util.function.BinaryOperator; import java.util.function.Function; import java.util.function.UnaryOperator; public class Main { private void testFn() { Function lookup = Integer::parseInt; UnaryOperator selector = String::trim; BinaryOperator min = Math::min; String foo = "xyz"; Integer integer = lookup.apply(selector.apply(" " + foo)); } }