Function pgrx_pg_sys::add_local_string_reloption

pub unsafe fn add_local_string_reloption(
    arg_opts: *mut local_relopts,
    arg_name: *const c_char,
    arg_desc: *const c_char,
    arg_default_val: *const c_char,
    arg_validator: validate_string_relopt,
    arg_filler: fill_string_relopt,
    arg_offset: c_int
)