io.mockk.MockKException: no answer found for DocumentSnapshot(#1).toObject(...)

Question

I'm using .toObject(...) when calling Firestore methods:

firestore.collection(collectionPath)
            .document(documentId).get().await()
            .toObject(MyClass::class.java)

and I'm wondering how to mock this call using MockK in Kotlin Android Studio.

The mock is:

val mockFirestore: FirebaseFirestore = mockk {
            coEvery {
                collection(path)
                    .document(documentId)
                    .get()
            } returns mockTask<DocumentSnapshot>(documentSnapshot)
        }

trying .to to see what completions pop up results in .toString(), .toStr() and .toArray().

The error is:

io.mockk.MockKException: no answer found for DocumentSnapshot(#1).toObject(class ...) among the configured answers: (DocumentSnapshot(#1).getId())

how can I mock the call to .toObject(class)?