// Config defines the config for middleware.
// Next defines a function to skip this middleware when returned true.
// Optional. Default: nil
Next func(c *fiber.Ctx) bool
// Weak indicates that a weak validator is used. Weak etags are easy
// to generate, but are far less useful for comparisons. Strong
// validators are ideal for comparisons but can be very difficult
// to generate efficiently. Weak ETag values of two representations
// of the same resources might be semantically equivalent, but not
// byte-for-byte identical. This means weak etags prevent caching
// when byte range requests are used, but strong etags mean range
// requests can still be cached.