How to call parent component function from child component in vue3

parent

1. define and return a function

const a_parent_function = (paramaters) => {

}

return {

    a_parent_function

}

2. give it to the child component

<operation-list

    ref="a_reference_to_child_componet_that_you_should_use_to_call_child_funcitons_or_paramaters"

    :data="data"

    @the_parent_function="a_parent_function"

/>

child

1. use it

setup(props, ctx) {
    ctx.emit('the_parent_function', paramaters)
}