GObject.TypeFundamentalFlags
Bit masks used to check or determine specific characteristics of a fundamental type.
- TypeFundamentalFlags.CLASSED
- Indicates a classed type. 
- TypeFundamentalFlags.INSTANTIATABLE
- Indicates an instantiable type (implies classed). 
- TypeFundamentalFlags.DERIVABLE
- Indicates a flat derivable type. 
- TypeFundamentalFlags.DEEP_DERIVABLE
- Indicates a deep derivable type (implies derivable).