text: const mongoose = require('mongoose');
  const Schema = mongoose.Schema;
  
  const PrevMemberSchema = new Schema({
      tag: String,
      name: String,
      notExistDate: String,
      warLeague: [
          {
              type: Schema.Types.ObjectId,
              ref: 'League'
          }
      ]
  })
  
  module.exports = mongoose.model('PrevMember', PrevMemberSchema);