Readable UIContentSizeCategory string

UIContentSizeCategory+String.swift

/*
The rawValue of UIContentSizeCategory is not as clear as `UICTContentSizeCategoryL`(see example below) .

```swift
UIContentSizeCategory.large.rawValue//"UICTContentSizeCategoryL"

UIContentSizeCategory.accessibilityExtraExtraExtraLarge.rawValue//"UICTContentSizeCategoryAccessibilityXXXL"
```

To solve this problem, I defined mapping.

see also: https://developer.apple.com/design/human-interface-guidelines/ios/visual-design/typography/
*/
extension UIContentSizeCategory {
    var string: String {
        switch self {
        case .extraSmall:
            return "extraSmall"
        case .small:
            return "small"
        case .medium:
            return "medium"
        case .large:
            return "large"
        case .extraLarge:
            return "extraLarge"
        case .extraExtraLarge:
            return "extraExtraLarge"
        case .extraExtraExtraLarge:
            return "extraExtraExtraLarge"
        case .accessibilityMedium:
            return "accessibilityMedium"
        case .accessibilityLarge:
            return "accessibilityLarge"
        case .accessibilityExtraLarge:
            return "accessibilityExtraLarge"
        case .accessibilityExtraExtraLarge:
            return "accessibilityExtraExtraLarge"
        case .accessibilityExtraExtraExtraLarge:
            return "accessibilityExtraExtraExtraLarge"
        case .unspecified:
            return "unspecified"
        default:
            return self.rawValue
        }
    }
}