//  append_hash_to_fn_name - Must be 0 or 1. If set to 1, the actual name
//                           of the function will be `fn_name` appended with
//                           '_<hash_of_this_function's_definition>'.
//                           If set to 0, the function's name will be `fn_name`.
//  num_opers - `num_opers` contains the number of elements in the `opers` array