Function pgx_pg_sys::extract_variadic_args

pub unsafe fn extract_variadic_args(
    arg_fcinfo: FunctionCallInfo, 
    arg_variadic_start: c_int, 
    arg_convert_unknown: bool, 
    arg_values: *mut *mut Datum, 
    arg_types: *mut *mut Oid, 
    arg_nulls: *mut *mut bool
) -> c_int