Function pgx_pg_sys::DefineCustomStringVariable

pub unsafe fn DefineCustomStringVariable(
    arg_name: *const c_char, 
    arg_short_desc: *const c_char, 
    arg_long_desc: *const c_char, 
    arg_valueAddr: *mut *mut c_char, 
    arg_bootValue: *const c_char, 
    arg_context: GucContext, 
    arg_flags: c_int, 
    arg_check_hook: GucStringCheckHook, 
    arg_assign_hook: GucStringAssignHook, 
    arg_show_hook: GucShowHook
)