public Address getTargetAddressExtra() throws RelocationException {
		if (targetSymbolExtra != null) {
			return targetSymbolExtra.getAddress();
		}
		if (targetSectionExtra != null) {
			return space.getAddress(targetSectionExtra.getAddress());
		}
		if (targetPointerExtra != null) {
			return targetPointerExtra;
		}
		throw new RelocationException("Extra relocation target not found");
	}
Gets the {@link Address} of the extra relocation target

@return The {@link Address} of the extra relocation target
@throws RelocationException If the {@link Address} of the extra relocation target could not be 
  found (of if there wasn't an extra relocation target).
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/macho/relocation/MachoRelocation.java