code: public boolean subtractAll(ModuleDeps toSub) {
  		boolean modified = false;
  		for (Map.Entry<String, ModuleDepInfo> entry : toSub.entrySet()) {
  			modified |= subtract(entry.getKey(), entry.getValue());
  		}
  		return modified;
  	}
docs: Calls {@link #subtract(String, ModuleDepInfo)} for each of the map
  entries in <code>toSub</code>
  
  @param toSub
  The map to subtract from this map
  @return True if this map was modified