Properties
[SYMBOL_SUB_PROPERTY_ENTRIES]
[SYMBOL_SUB_PROPERTY_ENTRIES]: readonly {
type: T;
value: number;
}[]
[SYMBOL_SUB_PROPERTY_TYPES]
[SYMBOL_SUB_PROPERTY_TYPES]: readonly T[]
subProperties
subProperties: Partial<Record<T, number>>
subPropertyCount
subPropertyCount: number