freeToFormats
Creates a new GdkContentFormats from the current state of the given @builder, and frees the @builder instance.
Return
the newly created GdkContentFormats with all the formats added to @builder
Creates a new GdkContentFormats from the current state of the given @builder, and frees the @builder instance.
the newly created GdkContentFormats with all the formats added to @builder