An group is an Ldap leaf with the following features:
ObjectClass at least "posixGroup" or "groupOfNames" or "groupOfUniqueNames"
The id of the group is the DN and the common name (CN) is mandatory
Specific classes are implemented for posixGroup, groupOfNames and groupOfUniqueNames
An user is an Ldap leaf with the following features:
ObjectClass at least "person" (probably with the extra fields provided by "inetOrgPerson" class
Fields unique and in string format
The fullName of an element is the DN and the id is the uuid element
The other parameters are:
-- cn (common name) - mandatory
-- sn (surname) - mandatory