text: 
  var mongoose = require('mongoose');
  var Schema = mongoose.Schema;
  // create a schema
  var taskSchema = new Schema({
    code: String,
    description: String,
    state: String,
    track: [{
      responsible: String,
      state: String,
      updated_at: Date
    }],
    created_at: Date
  });
  
  // the schema is useless so far
  // we need to create a model using it
  var Task = mongoose.model('Task', taskSchema);
  
  // make this available to our users in our Node applications
  module.exports = Task;
  