text: const mongoose = require('mongoose');
  const Schema = mongoose.Schema;
  
  const comment = new Schema({
      questionId: { type: Schema.Types.ObjectId, ref: 'Question'},
      userId: { type: Schema.Types.ObjectId, ref: 'User'},
      comment: String,
  },{
      timestamps:true
  });
  
  
  const Comment = mongoose.model('Comment', comment);
  
  module.exports = Comment
  