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.Data Service Conventions
|===
|Method Stem |Description |Possible Return Types

|`count*`
| Count the number of results
| Subclass of `Number` or `Observable<Number>`

|`countBy*`
| Dynamic Finder Count the number of results
| Subclass of `Number` or `Observable<Number>`

|`delete*`
| Delete an instance for the given arguments
| `T`, `void`, subclass of `Number` or `Observable<Number>`

|`find*`, `get*`, `list*` or `retrieve*`
| Query for the given parameters
| `T`, `Iterable<T>`, `T[]`, `List<T>`, `Observable<T>`

|`findBy*`, `listBy*`, `findAllBy*` or `getBy*`
| Dynamic finder query for given parameters
| `T`, `Iterable<T>`, `T[]`, `List<T>`, `Observable<T>`

|`save*`, `store*`, or `persist*`
| Save a new instance
| `T` or `Observable<T>`

|`update*`
| Updates an existing instance. First parameter should be `id`
| `T` or `Observable<T>`

|===