private Address getChunkStartAddress(MemoryBlock block, Address address) {
		long offset = address.subtract(block.getStart());
		long chunk = offset / chunkSize;
		return block.getStart().add(chunk * chunkSize);
	}
Service for associating colors with a programs address's based on an Entropy computation for
the bytes in a chunk around the given address.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/overview/entropy/EntropyOverviewColorService.java