@Override
	public void setSourceName(String sourceName) {
		memMap.lock.acquire();
		try {
			checkValid();
			try {
				record.setString(MemoryMapDBAdapter.SOURCE_COL, sourceName);
				adapter.updateBlockRecord(record);
			}
			catch (IOException e) {
				memMap.dbError(e);
			}
			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