@Override
	public void dataTypeDeleted(DataType dt) {
		if (referencedDataType == dt) {
			notifyDeleted();
			deleted = true;
		}
	}
Read segmented address from memory. NOTE: little-endian memory assumed.

@param buf     memory buffer associated with a segmented-address space
               positioned at start of address value to be read
@param dataLen pointer-length (2 and 4-byte pointers supported)
@return address value returned as segmented Address object or null for
        unsupported pointer length or meory access error occurs.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/data/PointerDataType.java