@Override
	public boolean hasValue(BigInteger index) {
		Address addr = getAddress(index);
		return memory.getAllInitializedAddressSet().contains(addr);
	}
Get the byte at the given index.

@param index byte index
@throws ByteBlockAccessException if the block cannot be read
@throws IndexOutOfBoundsException if the given index is not in this block.
Ghidra/Features/ByteViewer/src/main/java/ghidra/app/plugin/core/byteviewer/MemoryByteBlock.java