Generate a detailed UML class diagram starting from the following problem description: define the required classes, their attributes, the signature of their methods and the relations between the different classes. Problem description: After decades of working with paper records and a personal check-in in the mornings, the daycare ,,Little Caterpillar" wants to digitize their child registration system, and partially automate the check-in process for children. To establish requirements, they have provided their implementation partner with the following information: Parents need to be able to register their children at the daycare when first signing up for their services. Furthermore, they need to be able to drop them off in the mornings, pick them up in the afternoon, and notify the daycare about illness - with the latter feature in particular being highly relevant to the daycare to reduce caller volumes throughout the early morning. Children can be registered either as babies or as toddlers. This depends on their age: until the age of a year, a child is considered a baby, an older child can only be entered in the system as a toddler. All children need to be registered with a date of birth, name, and address. For babies, it also needs to be known whether they use cloth or throwaway diapers, and whether they receive formula milk or breast milk. For toddlers, dietary needs have to be entered into the system, in particular, whether they should receive a halal, vegetarian, or meat-based diet. Information on parents is recorded including their name, home phone number, work phone number (if applicable), and the system needs to be able to make a connection to their children. The daycare charges parents per day, and the system needs to be capable of tracking how many days a child attended the establishment. Additionally, it should be possible to calculate the annual fee for a given child. Parents will be issued with swipe cards (one per child) to check their children in and out in the morning, allowing the system to register whether a child has been dropped off or picked up.