text: var mongoose = require( "mongoose" );
  
  
  var Schema = mongoose.Schema;
  var ObjectId = Schema.ObjectId;
  
  
  var GCMSchema = Schema ( {
      id: ObjectId,
      token: {
          type: String,
          index: true
      }
  } );
  
  
  exports.GCM = mongoose.model( "gcm", GCMSchema );
  