protected int getByteBlockNumber(Address blockStartAddr) {
		for (int i = 0; i < memBlocks.length; i++) {
			if (memBlocks[i].getStart().compareTo(blockStartAddr) == 0) {
				return i;
			}
		}
		return -1;
	}
Given an address, get the byte block info.
Ghidra/Features/ByteViewer/src/main/java/ghidra/app/plugin/core/byteviewer/ProgramByteBlockSet.java