canonical name of the property specified
nick name for the property specified
description of the property specified
a #GVariantType
a #GVariant of type @type to use as the default value, or %NULL
flags for the property specified
the newly created #GParamSpec
2.26
Creates a new #GParamSpecVariant instance specifying a #GVariant property.
If @default_value is floating, it is consumed.
See g_param_spec_internal() for details on property names.