When I don’t have a MongoDB source attached, the code does not give any hint that I need to attach a MongoDB source:

When this happens with JPA buddy (or could be IntelliJ in general for ORM annotations), they show a red underline in the code and say ‘Unresolved database references in annotations’ and have a fix to assign a datasource in-line. 

Potential fix suggestion

Could we show a similar red line and a pop-up that asks users to assign a data source? The error could be ‘Unresolved database references in MongoDB query’ and the remedy is an option to assign a datasource in line similar to what it is doing above.