ABAP: Get super container of DROP_DOWN_BY_KEY

Hello,

I have some dynamic behavior on the screen that I am working on:

Transparent containers generated dynamically. Each of newly generated containers has a DROP_DOWN_BY_KEY.

When a user selects an item from that DROP_DOWN_BY_KEY I need to get reference to a container where this DROP_DOWN_BY_KEY is in.

Parameter WDEVENT of type CL_WD_CUSTOM_EVENT can access the following methods:

CONSTRUCTOR

GET_NAME

GET_BYTE

GET_CHAR

GET_FLOAT

GET_INT

GET_OBJECT

GET_STRING

GET_CONTEXT_ELEMENT

GET_DATA

Which one should be used to get reference to the container?

Is there a different way?

Thank you.