@startuml
'https://plantuml.com/class-diagram

namespace NaturallyColorModels {
    class CyanMagentaYellowKey
    class HueSaturationValue
    class RedGreenBlue
}

namespace ColorModels {
    abstract AbstractColorModel
    class CyanMagentaYellowKey
    class HueSaturationValue
    class RedGreenBlue
    CyanMagentaYellowKey --|> AbstractColorModel
    HueSaturationValue --|> AbstractColorModel
    RedGreenBlue --|> AbstractColorModel
}
NaturallyColorModels.CyanMagentaYellowKey o-- ColorModels.CyanMagentaYellowKey
NaturallyColorModels.HueSaturationValue o-- ColorModels.HueSaturationValue
NaturallyColorModels.RedGreenBlue o-- ColorModels.RedGreenBlue

namespace NaturallyTransformer {
    interface ColorModelTransformInterface {
        + toRedGreenBlue(): NaturallyColorModels.RedGreenBlue
        + toCyanMagentaYellowKey(): NaturallyColorModels.CyanMagentaYellowKey
        + toHueSaturationValue(): NaturallyColorModels.HueSaturationValue
    }
    class CyanMagentaYellowKeyTransformer
    class HueSaturationValueTransformer
    class RedGreenBlueTransformer

    NaturallyTransformer.ColorModelTransformInterface o-- Transformer.ColorModelTransformInterface

    NaturallyTransformer.ColorModelTransformInterface <|-- NaturallyTransformer.CyanMagentaYellowKeyTransformer
    NaturallyTransformer.ColorModelTransformInterface <|-- NaturallyTransformer.HueSaturationValueTransformer
    NaturallyTransformer.ColorModelTransformInterface <|-- NaturallyTransformer.RedGreenBlueTransformer
    NaturallyTransformer.RedGreenBlueTransformer o-- NaturallyColorModels.RedGreenBlue
    NaturallyTransformer.CyanMagentaYellowKeyTransformer o-- NaturallyColorModels.CyanMagentaYellowKey
    NaturallyTransformer.HueSaturationValueTransformer o-- NaturallyColorModels.HueSaturationValue
}

namespace Transformer {
    interface ColorModelTransformInterface {
        + toRedGreenBlue(): ColorModels.RedGreenBlue
        + toCyanMagentaYellowKey(): ColorModels.CyanMagentaYellowKey
        + toHueSaturationValue(): ColorModels.HueSaturationValue
    }
    class CyanMagentaYellowKeyTransformer
    class HueSaturationValueTransformer
    class RedGreenBlueTransformer
    Transformer.ColorModelTransformInterface <|-- Transformer.CyanMagentaYellowKeyTransformer
    Transformer.ColorModelTransformInterface <|-- Transformer.HueSaturationValueTransformer
    Transformer.ColorModelTransformInterface <|-- Transformer.RedGreenBlueTransformer
    namespace Utilities {
        abstract AbstractHueSaturationValueToUtility
        class CyanMagentaYellowKeyToHueSaturationValue
        class HueSaturationValueToCyanMagentaYellowKey
        class HueSaturationValueToRedGreenBlue
        class RedGreenBlueToHueSaturationValue
        Transformer.Utilities.CyanMagentaYellowKeyToHueSaturationValue --|> Transformer.Utilities.AbstractHueSaturationValueToUtility
        Transformer.Utilities.HueSaturationValueToCyanMagentaYellowKey --|> Transformer.Utilities.AbstractHueSaturationValueToUtility
        Transformer.Utilities.HueSaturationValueToRedGreenBlue --|> Transformer.Utilities.AbstractHueSaturationValueToUtility
        Transformer.Utilities.RedGreenBlueToHueSaturationValue --|> Transformer.Utilities.AbstractHueSaturationValueToUtility
    }
    CyanMagentaYellowKeyTransformer o-- Transformer.Utilities.CyanMagentaYellowKeyToHueSaturationValue
    CyanMagentaYellowKeyTransformer o-- Transformer.Utilities.HueSaturationValueToRedGreenBlue

    HueSaturationValueTransformer o-- Transformer.Utilities.HueSaturationValueToRedGreenBlue
    HueSaturationValueTransformer o-- Transformer.Utilities.HueSaturationValueToCyanMagentaYellowKey

    RedGreenBlueTransformer o-- Transformer.Utilities.RedGreenBlueToHueSaturationValue
    RedGreenBlueTransformer o-- Transformer.Utilities.HueSaturationValueToCyanMagentaYellowKey
}
ColorModels.AbstractColorModel --o Transformer.ColorModelTransformInterface

@enduml