basicPerformer.java

if (op.hasInsert()) {
        //Some code
        }

        if (op.hasRemove()) {
        //Some code
        }

        if (op.hasGet()) {
        //Some code
        }
// Reads the transaction object to see if the tests needs a replace operation
        if (op.hasReplace()) {

final CommandReplace request = op.getReplace();
//Performer gets the new content value of the document
final JsonObject content = JsonObject.fromJson(request.getContentJson());
// Retrieve information on the location of the document
final Collection collection =
        connection.getBucket(request.getDocId().getBucketName())
        .scope(request.getDocId().getScopeName())
        .collection(request.getDocId().getCollectionName());
        String docId = request.getDocId().getDocId() // get docId of the document
//Finally execute transaction operation
final TransactionGetResult r = ctx.get(collection, );
        ctx.replace(r, content);
        }
        });