The Open API docs are a mess, and the response on runtime does not match the models.
For example: "Getting Tasks of a List" (https://clickup.com/api/clickupreference/operation/GetTasks/)
I receive custom_fields of each task with the values on runtime, but it is not specified by the API documentation. Also, what I get is the model "Task9", that differs to the models Task, Task1, Task2, Task3, Task4, Task5, and Task6.
Yes, there are seven different models defined for a task.