text: import mongoose from 'mongoose';
  
  const conceptSchema = mongoose.Schema({
      title: String,
      creator: { type: mongoose.Types.ObjectId, ref: 'User' },
      text: String,
      tags: [String],
      public: Boolean,
      questions: [{ type: mongoose.Types.ObjectId, ref: 'Question' }],
      likes: [{ type: mongoose.Types.ObjectId, ref: 'User' }],
      dislikes: [{ type: mongoose.Types.ObjectId, ref: 'User' }],
      comments: [{ type: mongoose.Types.ObjectId, ref: 'Comment' }],
  }, { versionKey: false });
  
  const ConceptModel = mongoose.model('Concept', conceptSchema);
  
  export default ConceptModel;