@Override
	DBBuffer createBuffer(int length, byte initialValue) throws IOException {
		DBBuffer buffer = handle.createBuffer(length);
		buffer.fill(0, length - 1, initialValue);
		return buffer;
	}
MemoryMap adapter for version 3.
This version introduces the concept of sub memory blocks and FileBytes
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/mem/MemoryMapDBAdapterV3.java