private MemoryBlock addBlock(String name, long offset, int length) throws Exception {
		Memory memory = program.getMemory();
		Address start = getAddr(offset);
		return memory.createInitializedBlock(name, start, length, (byte) 0,
			TaskMonitor.DUMMY, false);
	}
Method addBlock.
@param name block name
@param offset offset for the starting address
@param length number of bytes in the block
Ghidra/Features/Base/src/test.slow/java/ghidra/program/database/module/TreeManagerTest.java