pub unsafe extern "C" fn g_param_spec_variant(
name: *const c_char,
nick: *const c_char,
blurb: *const c_char,
type_: *const GVariantType,
default_value: *mut GVariant,
flags: GParamFlags,
) -> *mut GParamSpec
pub unsafe extern "C" fn g_param_spec_variant(
name: *const c_char,
nick: *const c_char,
blurb: *const c_char,
type_: *const GVariantType,
default_value: *mut GVariant,
flags: GParamFlags,
) -> *mut GParamSpec