PStore backend @api public
@param [Hash] options @option options [String] :file PStore file @option options [::PStore] :backend Use existing backend instance
(see Proxy#clear)
(see Proxy#create)
(see Proxy#delete)
(see Proxy#increment)
(see Proxy#key?)
(see Proxy#load)
(see Proxy#store)
[Validate]