title: Extjs store find all
body: <p>Documentation of <code>Ext.data.Store</code> find method says: </p>
  
  <blockquote>
    <p>Finds the index of the first matching Record in this store by a
    specific field value.</p>
  </blockquote>
  
  <p>My question is how can I find indexes of all matching records in this store?</p>