public Address getRtti0Address(Program program, Address rtti1Address) {
		Address rtti0ComponentAddress = rtti1Address.add(RTTI_0_OFFSET);
		return getReferencedAddress(program, rtti0ComponentAddress);
	}
Gets the address of the RTTI 0 or null if one isn't indicated.
@param program the program  containing the address
@param rtti1Address the address for the RTTI 1 that refers to the RTTI 0
@return the address of the RTTI 0 or null.
Ghidra/Features/Base/src/main/java/ghidra/app/util/datatype/microsoft/RTTI1DataType.java