@Override
	public void setArtificial(boolean a) {
		memMap.lock.acquire();
		try {
			checkValid();
			if (setFlagBit(ARTIFICIAL, a)) {
				memMap.fireBlockChanged(this);
			}
		}
		finally {
			memMap.lock.release();
		}
	}
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