/**
phpDox
Overview
Namespaces
Interfaces
Classes
Traits
Source
Overview
Classes
Bluz\Http
CacheControl
getEtag
Introduction
Synopsis
Return
Source
Bluz\Http\CacheControl::
getEtag
Returns the literal value of the ETag HTTP header
Signature
public function getEtag()
Returns
string
The ETag HTTP header or null if it does not exist