title: how to search an object inside an array of objects in mongoose?
body: <p>i have my structure like this :</p>
  <pre><code>test{
    _id: 60eadb64b72caa2ae419e085,
    testid: 'hh',
    time: 45,
    testPassword: 123,
    startTime: 2021-07-11T11:52:04.245Z,
    Students: [
      {
        _id: 60eadb98b72caa2ae419e088,
        submission: '#*#org 0h #*##*#ret#*#',
        familyName: 'dsc',
        firstName: 'ccccc',
        group: 2,
        time: 0.8772833333333333
      },
      {
        _id: 60eadbb5b72caa2ae419e08c,
        submission: '#*#org 0h #*##*#ret#*#',
        familyName: 'eqf',
        firstName: 'aaaaa',
        group: 56,
        time: 1.357
      }
    ],
    __v: 0
  }
  </code></pre>
  <p>i want to get just the object that has the _id: 60eadb98b72caa2ae419e088 from the array of students like this</p>
  <pre><code>    {
        _id: 60eadb98b72caa2ae419e088,
        submission: '#*#org 0h #*##*#ret#*#',
        familyName: 'dsc',
        firstName: 'ccccc',
        group: 2,
        time: 0.8772833333333333
      }
  </code></pre>