LoadMore.swift

func loadMore(_ pageNumber: Int, _ pageSize: Int, onSuccess: ((Bool) -> Void)?, onError: ((Error) -> Void)?) {
    // Call your api here
    // Send true in onSuccess in case new data exists, sending false will disable pagination
    
    // If page number is first, reset the list
    if pageNumber == 1 { self.list = [Model]() }
    
    // else append the data to list
    self.list.append(apiResponseList)
    
    // If Api responds with error
    onError?(apiError)        

    // Else end success with flag true if more data available
    let moreDataAvailable = !apiResponseList.isEmpty
    onSuccess?(moreDataAvailable)
}