Extension for IP addresses: ip'192.168.1.1' or ip'2001:db8::1'.
ip'192.168.1.1'
ip'2001:db8::1'
The extension identifier, e.g., "dt", "ip", "h", "b64", "hash", "b1", "t1", "float".
Formats a DataItem into CDN extension syntax, or returns null if not applicable.
null
Parses the string content of an extension literal into a DataItem.