void offsetSet(mixed $offset, mixed $value) Set the value for a given offset

mixed getKey() Get the value of the model's primary key.

Collection reject(callable|mixed $callback)

mixed search(mixed $value, bool $strict = false) Search the collection

bool hasGetMutator(string $key) Determine if a get mutator exists for an

array all() Get all of the items in the collection.

void offsetUnset(string $key) Unset the item at a given offset.

Collection union(mixed $items)

bool push() Save the model and all of its relationships.

notifiable() Get the notifiable entity that the notification belongs to.