Fold label

This is a feature request:

• it would be great if there were a way to define the 'label' for a folded line

For example when folding imports instead of showing the first import I would like to just show 'import ...'.

Here is some code to help visualize

monaco.languages.register({
    id: "foldLanguage"
});

var value =
`package com.androidpal.host;

import android.app.Activity;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v4.app.NavUtils;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.bumptech.glide.Glide;
import com.bumptech.glide.request.RequestOptions;
import com.google.android.gms.auth.api.signin.GoogleSignIn;
import com.google.android.gms.auth.api.signin.GoogleSignInAccount;
import com.google.android.gms.auth.api.signin.GoogleSignInClient;
import com.google.android.gms.auth.api.signin.GoogleSignInOptions;

import com.google.android.gms.common.api.ApiException;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthCredential;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.auth.GoogleAuthProvider;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;

import org.greenrobot.eventbus.EventBus;
import org.greenrobot.eventbus.Subscribe;
import org.greenrobot.eventbus.ThreadMode;

import java.lang.reflect.Field;
import java.util.Map;

public class AndroidPalActivity extends AppCompatActivity {

    private boolean mIsProfiling;
    private DrawerLayout mDrawerLayout;
    private FirebaseAuth mAuth;
    private ActionBarDrawerToggle mDrawerToggle;
    private GoogleSignInClient mGoogleSignInClient;

    public void someMethod() {
        // this is the method body
    }

}`

monaco.editor.create(document.getElementById("container"), {
    value: value,
    language: "foldLanguage"
});

monaco.languages.registerFoldingRangeProvider("foldLanguage", {
    provideFoldingRanges: function (model, context, token) {
        const ranges = [];
        const lines = model.getLinesContent();
        let rangeStart = -1;
        let currentLine = 1;
        for (const line of lines) {
            if (rangeStart === -1 && line.startsWith('import')) {
                rangeStart = currentLine;
            }
            if (!line.trim()) {
                currentLine++;
                continue;
            }
            if (!line.startsWith('import')) {
                if (rangeStart !== -1) {
                    const foldingRange = {
                        start: rangeStart,
                        end: currentLine - 1,
                        kind: 'imports'
                    };
                    ranges.push(foldingRange);
                    rangeStart = -1;
                }
            }
            currentLine++;
        }
        return ranges;
    }
});

When folded it shows:

(the yellow highlight is mine)

I would like it instead to show:

Start with the registerFoldingRangeProvider example and its foldingRange object, then trace how the editor renders the returned range. Determine where a custom label could be represented and exposed; done means folded import ranges display the requested text without changing their range behavior.