Dummy session storage class.
Implements session storage place holder. No actual storage will be done.
Create a new NullStore instance.
session is the session this instance is associated with.
option is a list of initialisation options.  None are
currently recognised.
 
               # File cgi/session.rb, line 507
def initialize(session, option=nil)
end
             
            Close session storage.
A no-op.
 
               # File cgi/session.rb, line 524
def close
end
             
            Delete the session state.
A no-op.
 
               # File cgi/session.rb, line 530
def delete
end