Returns a dictionary of dictionaries... with
NSURLProtectionSpace
objects as the keys in the outer dictionary, and
values which are dictionaries of the credentails
within each protection space.
Returns a dictionary mapping usernames to
credentials for the specified protection
space. Each username is a unique
identifier for a credential within a protection
space.
Sets the default credential for the
protection space. Also calls
-setCredential:forProtectionSpace:
if the credential has not already been set in space.
Instance Variables for NSURLCredentialStorage Class
Warning the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically private, it is
intended for internal use within the package, and
you should not use the variable in other code.