Description
CS02:
STIX Version 2.1
Committee Specification 02
25 January 2021
https://docs.oasis-open.org/cti/stix/v2.1/cs02/stix-v2.1-cs02.docx
https://docs.oasis-open.org/cti/stix/v2.1/cs02/stix-v2.1-cs02.html
https://docs.oasis-open.org/cti/stix/v2.1/cs02/stix-v2.1-cs02.pdf