*
* - for **subcall** having a similar behaviour to the subcalls of bindings
* version 1 and 2: afb_req_x2_subcall_pass_events|afb_req_x2_subcall_on_behalf
*
* - for **subcall** having a similar behaviour to the subcalls of bindings
* version 1 and 2: afb_req_x2_subcall_pass_events|afb_req_x2_subcall_on_behalf