What type of data or elements can be at the end of a Bucket structure?

In the Bucket structure in Go, which is often used in hash tables (for example, in the implementation of map), there can be a pointer or reference to the next element (next bucket) at the end to resolve collisions using chaining. This allows storing multiple elements with the same hash in a linked list.

Example of a simplified Bucket structure:

type Bucket struct {
    key   string
    value interface{}
    next  *Bucket // pointer to the next bucket in the chain
}

Thus, the end of the structure usually contains a reference to the next element, ensuring connectivity and the ability to traverse all elements with the same hash.