code: @SuppressWarnings("unchecked")
  	public <T> T getPropertyValue(ElementDescriptor<T> property)
  	{
  		if (mProperties == null)
  		{
  			return null;
  		}
  		return (T) mProperties.get(property);
  	}
docs: Returns the value of a property in this propstat element.
  
  @param property
  the {@link XmlElementDescriptor} of the property to return.
  @return the value of the property or <code>null</code> if there is no property of this name.