gistfile1.java

public class TestAssemblyFlow extends Flow {

...

  public String fooOperation() {
    StringBuffer buffer = new StringBuffer("");
    buffer.append(((TestComponentA) getAssembly().
getComponentByType("TestComponentA")).fooComponentOperation());
    buffer.append(((TestComponentB) getAssembly().
getComponentByType("TestComponentB")).fooComponentOperation());
    return buffer.toString();
  }
}