private void sequenceSubBlocks() throws IOException {
		long startingOffset = 0;
		for (SubMemoryBlock subBlock : subBlocks) {
			subBlock.setParentIdAndStartingOffset(id, startingOffset);
			startingOffset += subBlock.subBlockLength;
		}
	}
Get collection of blocks which map onto this block.

@return collection of blocks which map onto this block or null if none identified
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/mem/MemoryBlockDB.java