title: sailjs search in many to many
body: <p>have 2 models with many to many assoc(MongoDB). How I can find in assoc. EXAMPLE
  USER MODEL</p>
  
  <pre><code>name: {
  type:'string'
  },
  groups:{
  collection:'Group'
  via:'users'
  }
  </code></pre>
  
  <p>GROUP MODEL</p>
  
  <pre><code>name:{
  type:'string'
  },
  users:{
  collection:'User',
  via:'groups'
  }
  </code></pre>
  
  <p>how I can find all users in all Groups when name=Jack ?</p>