
  -spec erlang:dist_ctrl_get_opt(DHandle, get_size) -> Value
                                    when
                                        DHandle :: dist_handle(),
                                        Value :: boolean().

Since:
  OTP 22.0

  Returns the value of the get_size option on the distribution
  channel identified by DHandle. For more information see the
  documentation of the get_size option for the 
  erlang:dist_ctrl_set_opt/3 function.

  Note:
    Only the process registered as distribution controller for the
    distribution channel identified by DHandle is allowed to
    call this function.

  This function is used when implementing an alternative
  distribution carrier using processes as distribution controllers. 
  DHandle is retrieved via the callback f_handshake_complete.
  More information can be found in the documentation of ERTS User's
  Guide ➜ How to implement an Alternative Carrier for the Erlang
  Distribution ➜ Distribution Module.
