Function pgx_pg_sys::add_string_reloption

pub unsafe fn add_string_reloption(
    arg_kinds: bits32, 
    arg_name: *const c_char, 
    arg_desc: *const c_char, 
    arg_default_val: *const c_char, 
    arg_validator: validate_string_relopt, 
    arg_lockmode: LOCKMODE
)