title: Array of composite type as class data members in ExtJS
body: <p>I'm new to ExtJS and am trying to replicate a typical Java class in ExtJS.
  Take the following as example:</p>
  
  <pre><code>class A {
      B b[];
      C c[];
  }
  
  class B {
  }
  
  class C {
  }
  </code></pre>
  
  <p>I searched but didn't find anything on 'composite arrays'.</p>