private Data createUndefined(Listing listing, Memory memory, Address addr, int size)
			throws CodeUnitInsertionException {
		MemoryBlock block = memory.getBlock(addr);
		if (block == null || !block.isInitialized()) {
			return null;
		}
		DataType undefined = Undefined.getUndefinedDataType(size);
		return listing.createData(addr, undefined);
	}
Checks to see if the COFF is CLI.

@param header The COFF's headers.
@return True if the COFF is CLI; otherwise, false.
Ghidra/Features/Base/src/main/java/ghidra/app/util/opinion/CoffLoader.java