public byte getByte(long offset) throws MemoryAccessException {
		SubMemoryBlock subBlock = getSubBlock(offset);
		try {
			return subBlock.getByte(offset);
		}
		catch (IOException e) {
			checkValid(); 		 // may have changed without lock
			memMap.dbError(e);
		}
		return 0;
	}
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