code: protected void initialize() {
          _bcMembershipListeners = new ArrayList<BeanContextMembershipListener>();
          _children = Collections.synchronizedMap(new HashMap<Object, BCChild>());
  
          _childPcl = new PropertyChangeListener() {
              public void propertyChange(PropertyChangeEvent pce) {
                  ControlBeanContextSupport.this.propertyChange(pce);
              }
          };
  
          _childVcl = new VetoableChangeListener() {
              public void vetoableChange(PropertyChangeEvent pce) throws PropertyVetoException {
                  ControlBeanContextSupport.this.vetoableChange(pce);
              }
          };
      }
docs: Init this classes data structures.