title: How to share async method across the components - LitElement
body: <p>I was trying to build a couple of components using <strong><code>lit-element</code></strong> where i have used async method which will be used to <strong><code>fetch</code></strong> the same data from an API.</p>
  <p><strong>Utility method:</strong></p>
  <pre><code>async resolveData() {
      let response = await fetch('./emp-data.json');
      let empData = await response.json();
      let employees = null;
  
      employees = empData.employees;
  
      return employees;
  }
  </code></pre>
  <p><strong>Question:</strong> How can i actually separate this utility method from the components and just re-use it. Is there a best way to fix this in the context of <strong><code>lit-element</code></strong>?</p>