diff --git a/driver-pulsar/src/main/java/io/nosqlbench/driver/pulsar/PulsarActivity.java b/driver-pulsar/src/main/java/io/nosqlbench/driver/pulsar/PulsarActivity.java
index 466b79f3a..fda1f16cd 100644
--- a/driver-pulsar/src/main/java/io/nosqlbench/driver/pulsar/PulsarActivity.java
+++ b/driver-pulsar/src/main/java/io/nosqlbench/driver/pulsar/PulsarActivity.java
@@ -3,21 +3,17 @@ package io.nosqlbench.driver.pulsar;
 import com.codahale.metrics.Timer;
 import io.nosqlbench.driver.pulsar.ops.PulsarOp;
 import io.nosqlbench.driver.pulsar.ops.ReadyPulsarOp;
-import io.nosqlbench.driver.pulsar.util.PulsarActivityUtil;
 import io.nosqlbench.driver.pulsar.util.PulsarNBClientConf;
 import io.nosqlbench.engine.api.activityapi.core.ActivityDefObserver;
 import io.nosqlbench.engine.api.activityapi.errorhandling.modular.NBErrorHandler;
 import io.nosqlbench.engine.api.activityapi.planning.OpSequence;
 import io.nosqlbench.engine.api.activityimpl.ActivityDef;
+import io.nosqlbench.engine.api.activityimpl.OpDispenser;
 import io.nosqlbench.engine.api.activityimpl.SimpleActivity;
 import io.nosqlbench.engine.api.metrics.ActivityMetrics;
-import org.apache.commons.lang3.StringUtils;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
-import java.util.function.LongFunction;
-import java.util.function.Supplier;
-
 public class PulsarActivity extends SimpleActivity implements ActivityDefObserver {
 
     private final static Logger logger = LogManager.getLogger(PulsarActivity.class);
@@ -30,7 +26,7 @@ public class PulsarActivity extends SimpleActivity implements ActivityDefObserve
     private String serviceUrl;
 
     private NBErrorHandler errorhandler;
-    private OpSequence<LongFunction<PulsarOp>> sequencer;
+    private OpSequence<OpDispenser<PulsarOp>> sequencer;
 
     // private Supplier<PulsarSpace> clientSupplier;
     // private ThreadLocal<Supplier<PulsarClient>> tlClientSupplier;
@@ -68,7 +64,7 @@ public class PulsarActivity extends SimpleActivity implements ActivityDefObserve
         super.onActivityDefUpdate(activityDef);
     }
 
-    public OpSequence<LongFunction<PulsarOp>> getSequencer() {
+    public OpSequence<OpDispenser<PulsarOp>> getSequencer() {
         return sequencer;
     }
 
diff --git a/driver-pulsar/src/main/java/io/nosqlbench/driver/pulsar/ops/ReadyPulsarOp.java b/driver-pulsar/src/main/java/io/nosqlbench/driver/pulsar/ops/ReadyPulsarOp.java
index 54b101e24..e659ee377 100644
--- a/driver-pulsar/src/main/java/io/nosqlbench/driver/pulsar/ops/ReadyPulsarOp.java
+++ b/driver-pulsar/src/main/java/io/nosqlbench/driver/pulsar/ops/ReadyPulsarOp.java
@@ -3,6 +3,7 @@ package io.nosqlbench.driver.pulsar.ops;
 import io.nosqlbench.driver.pulsar.*;
 import io.nosqlbench.driver.pulsar.util.PulsarActivityUtil;
 import io.nosqlbench.engine.api.activityconfig.yaml.OpTemplate;
+import io.nosqlbench.engine.api.activityimpl.OpDispenser;
 import io.nosqlbench.engine.api.scoping.ScopedSupplier;
 import io.nosqlbench.engine.api.templating.CommandTemplate;
 import org.apache.commons.lang3.StringUtils;
@@ -13,7 +14,7 @@ import org.apache.pulsar.client.api.Reader;
 import java.util.function.LongFunction;
 import java.util.function.Supplier;
 
-public class ReadyPulsarOp implements LongFunction<PulsarOp> {
+public class ReadyPulsarOp implements OpDispenser<PulsarOp> {
 
     private final OpTemplate opTpl;
     private final CommandTemplate cmdTpl;