class Protocol::HTTP::Header::Vary

The ‘vary` header is used in HTTP responses to indicate which request headers affect the selected response. It allows caches to differentiate stored responses based on specific request headers.
Represents the `vary` header, which specifies the request headers a server considers when determining the response.

def << value

@parameter value [String] the value or values to add, separated by commas.

Adds one or more comma-separated values to the `vary` header. The values are converted to lowercase for normalization. 
def << value
	super(value.downcase)
end

def initialize(value)

@parameter value [String] the raw header value containing request header names separated by commas.

Initializes a `Vary` header with the given value. The value is split into distinct entries and converted to lowercase for normalization. 
def initialize(value)
	super(value.downcase)
end