pub unsafe fn DefineCustomBoolVariable(
arg_name: *const c_char,
arg_short_desc: *const c_char,
arg_long_desc: *const c_char,
arg_valueAddr: *mut bool,
arg_bootValue: bool,
arg_context: Type,
arg_flags: c_int,
arg_check_hook: GucBoolCheckHook,
arg_assign_hook: GucBoolAssignHook,
arg_show_hook: GucShowHook,
)