VACM groups.
This data model has a different structure than the MIB.
Groups are explicitly defined in this list, and group
members are defined in the 'member' list (mapped to
vacmSecurityToGroupTable), and access for the group is
defined in the 'access' list (mapped to
vacmAccessTable).
n3:prefix
snmp
n3:reference
RFC 3415: View-based Access Control Model (VACM) for the
Simple Network Management Protocol (SNMP).
SNMP-VIEW-BASED-ACM-MIB.vacmSecurityToGroupTable
SNMP-VIEW-BASED-ACM-MIB.vacmAccessTable