[Click] access read handlers

[Panos Μatzakos]

Hello, i am quite confused with how to access a read handler from my configuration. Specifically i am using the following router:

Timedsource -> Queue -> myelement -> Discard 

and i want to access the read handlers of Queue element by calling the read_handler(Element *e, void *thunk)  function. So my question is where i can call this function from (to be able to access the drops handler for example while my router is running)  and in which way.
                                                                                       Thank you