@Override
	public String getDefaultLabelPrefix() {
		return "RTTI_3";
	}
Gets the address of the RTTI2 that is referred to from an RTTI3 structure that is placed at 
the indicated address.
@param memory the memory with the data for the RTTI structures.
@param rtti3Address address of an RTTI3 structure
@return the address of the RTTI2 structure or null.
Ghidra/Features/Base/src/main/java/ghidra/app/util/datatype/microsoft/RTTI3DataType.java