To me it does not make sense to show entities in a component diagram.
For eg. lets say I have a 'Beer Rating Component' in my application. The Beer Rating component gets us the rating for a particular beer brand by querying an external service. In my application I have a SLSB which actually queries the external service to get the fetch the rating. Is it a good idea to show the SLSB inside my 'Beer Rating Component' ? OR Should I just have a component with a comment that it uses a SLSB etc ?
Courage is resistance to fear, mastery of fear - not absence of fear - Mark Twain