Type mismatch Scala test - Found T in class, Required T in value

I am trying to create a test in Scala of a Java method. I have created a test to save for the method of saving a document in Elastic search:

I have tried to cast the parameter as an instance of T in my test method in Scala:

 test("Save Test") {
    val esr2 = new ElasticSearchRepository(jestClientFactory.getObject, index, esType.asInstanceOf[T].getClass , defaultSize)
    esr2.save(esType.asInstanceOf[T],"_testId")
    val results = esr.findAll()
    println("Save results: " + results)
    assert(results.contains("_testId") == true)
  }

The object esType is an object called copy.

Here is the method that I am testing:

public JestResult save(T doc, String id) {
        Index cmd = new Index.Builder(doc)
                .index(index)
                .type(index)
                .id(id)
                .build();

        JestResult result = execute(cmd);
        if (!result.isSucceeded()) {
            logger.error("error saving {} document to elasticsearch: {}", index, result.getErrorMessage());
        }
        return result;
    }

Even though I am converting my object of esType to T, I am getting the error of type mismatch.

When I run the test, it is saying: Type Mismatch

Found: T (in ElasticSearchRepositoryTest)

Required: T (in value esr2)

I am not sure how to make esType a T of esr2