public DBTraceReference addMemoryReference(long creationSnap, Address from, Address to) {
		return addMemoryReference(creationSnap, from, to, -1);
	}
Add a mnemonic memory reference

@param creationSnap the starting snap
@param from the from address
@param to the to address
@return the reference
Ghidra/Debug/Framework-TraceModeling/src/test/java/ghidra/trace/database/ToyDBTraceBuilder.java