public Address getAddress(BigInteger index) {
		try {
			mAddr = start;
			mAddr = mAddr.addNoWrap(index);
			return mAddr;
		}
		catch (AddressOverflowException e) {
			throw new IndexOutOfBoundsException("Index " + index + " is not in this block");
		}
	}
Get the address based on the index.
Ghidra/Features/ByteViewer/src/main/java/ghidra/app/plugin/core/byteviewer/MemoryByteBlock.java