Sequence diagram: can we use a function name that does not exist?

[tlylt]

In the sequence diagram, if in view of keeping it high level, instead of describing a few functions calls that I invoke from a component, I use a function name that describes what I want to do. But that function actually does not exist. Will that be OK? E.g. instead of using the two actual method names (doA and doB are actual methods)

X         Y        
| doA     |
| ------> |
| doB     |
| ------> |

Can I just use a fake method name (doC is not an actual method in my code) in place of the above?

X         Y        
| doC     |
| ------> |

[damithc]

Yes, but best not to make it appear like a method name which can be misleading . e.g., use get account details instead of getAccountDetails().

[tlylt]

Got it. Thanks, prof.