// Inject the attributeType into the oid/normalizer map
attributeTypeRegistry.addMappingFor( attributeType );
// Register this AttributeType into the Descendant map
attributeTypeRegistry.registerDescendants( attributeType, attributeType.getSuperior() );
/**
* Add the AT references (using and usedBy) :
* AT -> MR (for EQUALITY, ORDERING and SUBSTR)
* AT -> S