code: public Object getNestedProperty(Object obj, String propertyName) {
          if (obj != null && propertyName != null) {
              return PresentationManager.getPm().get(obj, propertyName);
          }
          return null;
      }
docs: Getter for a nested property in the given object.
  @param obj The object
  @param propertyName The name of the property to get
  @return The property value