Reduce the simple usage of guava where java has caught up

7 files changed, 31 insertions, 196 deletions

diff --git a/vespajlib/src/test/java/com/yahoo/stream/CustomCollectorsTest.java b/vespajlib/src/test/java/com/yahoo/stream/CustomCollectorsTest.java
index a5b2accec48..b8a13525159 100644
--- a/vespajlib/src/test/java/com/yahoo/stream/CustomCollectorsTest.java
+++ b/vespajlib/src/test/java/com/yahoo/stream/CustomCollectorsTest.java
@@ -1,7 +1,6 @@
 // Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
 package com.yahoo.stream;
 
-import com.google.common.collect.Lists;
 import com.yahoo.stream.CustomCollectors.DuplicateKeyException;
 import org.junit.Test;
 
@@ -42,7 +41,7 @@ public class CustomCollectorsTest {
 
     @Test
     public void custom_map_collector_throws_exception_upon_duplicate_keys() {
-        List<String> duplicates = Lists.newArrayList("same", "same");
+        List<String> duplicates = List.of("same", "same");
 
         try {
             duplicates.stream().collect(toCustomMap(Function.identity(), Function.identity(), HashMap::new));
@@ -53,7 +52,7 @@ public class CustomCollectorsTest {
     }
 
     private static List<String> numberList() {
-        return Lists.newArrayList("zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten");
+        return List.of("zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten");
     }
 
     private static class CustomHashMap<K,V> extends HashMap<K,V> {
diff --git a/vespajlib/src/test/java/com/yahoo/tensor/MappedTensorTestCase.java b/vespajlib/src/test/java/com/yahoo/tensor/MappedTensorTestCase.java
index ba814f7ad54..09b989e4380 100644
--- a/vespajlib/src/test/java/com/yahoo/tensor/MappedTensorTestCase.java
+++ b/vespajlib/src/test/java/com/yahoo/tensor/MappedTensorTestCase.java
@@ -1,9 +1,10 @@
 // Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
 package com.yahoo.tensor;
 
-import com.google.common.collect.Sets;
 import org.junit.Test;
 
+import java.util.Set;
+
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
 
@@ -34,7 +35,7 @@ public class MappedTensorTestCase {
         Tensor tensor = Tensor.Builder.of(type).
                 cell().label("x", "0").value(1).
                 cell().label("x", "1").value(2).build();
-        assertEquals(Sets.newHashSet("x"), tensor.type().dimensionNames());
+        assertEquals(Set.of("x"), tensor.type().dimensionNames());
         assertEquals("tensor(x{}):{0:1.0, 1:2.0}", tensor.toString());
     }
 
@@ -44,7 +45,7 @@ public class MappedTensorTestCase {
         Tensor tensor = Tensor.Builder.of(type).
                 cell().label("x", "0").label("y", "0").value(1).
                 cell().label("x", "1").label("y", "0").value(2).build();
-        assertEquals(Sets.newHashSet("x", "y"), tensor.type().dimensionNames());
+        assertEquals(Set.of("x", "y"), tensor.type().dimensionNames());
         assertEquals("tensor(x{},y{}):{{x:0,y:0}:1.0, {x:1,y:0}:2.0}", tensor.toString());
     }
 
diff --git a/vespajlib/src/test/java/com/yahoo/tensor/MixedTensorTestCase.java b/vespajlib/src/test/java/com/yahoo/tensor/MixedTensorTestCase.java
index a26e56c4468..0b5b761224b 100644
--- a/vespajlib/src/test/java/com/yahoo/tensor/MixedTensorTestCase.java
+++ b/vespajlib/src/test/java/com/yahoo/tensor/MixedTensorTestCase.java
@@ -2,9 +2,10 @@
 
 package com.yahoo.tensor;
 
-import com.google.common.collect.Sets;
 import org.junit.Test;
 
+import java.util.Set;
+
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
 
@@ -40,7 +41,7 @@ public class MixedTensorTestCase {
                 cell().label("y", 1).value(2).
                 // {y:2} should be 0.0 and non NaN since we specify indexed size
                 build();
-        assertEquals(Sets.newHashSet("y"), tensor.type().dimensionNames());
+        assertEquals(Set.of("y"), tensor.type().dimensionNames());
         assertEquals("tensor(y[3]):[1.0, 2.0, 0.0]",
                 tensor.toString());
     }
@@ -56,7 +57,7 @@ public class MixedTensorTestCase {
                 cell().label("x", 1).label("y", 1).value(5).
                 cell().label("x", 1).label("y", 2).value(6).
                 build();
-        assertEquals(Sets.newHashSet("x", "y"), tensor.type().dimensionNames());
+        assertEquals(Set.of("x", "y"), tensor.type().dimensionNames());
         assertEquals("tensor(x[2],y[3]):[[1.0, 2.0, 0.0], [4.0, 5.0, 6.0]]",
                      tensor.toString());
     }
@@ -68,7 +69,7 @@ public class MixedTensorTestCase {
                 cell().label("x", "0").value(1).
                 cell().label("x", "1").value(2).
                 build();
-        assertEquals(Sets.newHashSet("x"), tensor.type().dimensionNames());
+        assertEquals(Set.of("x"), tensor.type().dimensionNames());
         assertEquals("tensor(x{}):{0:1.0, 1:2.0}",
                      tensor.toString());
     }
@@ -83,7 +84,7 @@ public class MixedTensorTestCase {
                 cell().label("x", "1").label("y", "1").value(5).
                 cell().label("x", "1").label("y", "2").value(6).
                 build();
-        assertEquals(Sets.newHashSet("x", "y"), tensor.type().dimensionNames());
+        assertEquals(Set.of("x", "y"), tensor.type().dimensionNames());
         assertEquals("tensor(x{},y{}):{{x:0,y:0}:1.0, {x:0,y:1}:2.0, {x:1,y:0}:4.0, {x:1,y:1}:5.0, {x:1,y:2}:6.0}",
                 tensor.toString());
     }
@@ -99,7 +100,7 @@ public class MixedTensorTestCase {
                 cell().label("x", "2").label("y", 1).value(5).
                 cell().label("x", "2").label("y", 2).value(6).
                 build();
-        assertEquals(Sets.newHashSet("x", "y"), tensor.type().dimensionNames());
+        assertEquals(Set.of("x", "y"), tensor.type().dimensionNames());
         assertEquals("tensor(x{},y[3]):{1:[1.0, 2.0, 0.0], 2:[4.0, 5.0, 6.0]}",
                 tensor.toString());
     }
@@ -121,7 +122,7 @@ public class MixedTensorTestCase {
                 cell().label("x", "x2").label("y", 2).label("z","z1").value(15).
                 cell().label("x", "x2").label("y", 2).label("z","z2").value(16).
                 build();
-        assertEquals(Sets.newHashSet("x", "y", "z"), tensor.type().dimensionNames());
+        assertEquals(Set.of("x", "y", "z"), tensor.type().dimensionNames());
         assertEquals("tensor(x{},y[3],z{}):{{x:x1,y:0,z:z1}:1.0, {x:x1,y:0,z:z2}:2.0, {x:x1,y:1,z:z1}:3.0, " +
                      "{x:x1,y:1,z:z2}:4.0, {x:x1,y:2,z:z1}:5.0, {x:x1,y:2,z:z2}:6.0, {x:x2,y:0,z:z1}:11.0, " +
                      "{x:x2,y:0,z:z2}:12.0, {x:x2,y:1,z:z1}:13.0, {x:x2,y:1,z:z2}:14.0, {x:x2,y:2,z:z1}:15.0, {x:x2,y:2,z:z2}:16.0}",
@@ -149,7 +150,7 @@ public class MixedTensorTestCase {
                 cell().label("i", "b").label("k","d").label("j",1).label("l",0).value(15).
                 cell().label("i", "b").label("k","d").label("j",1).label("l",1).value(16).
                 build();
-        assertEquals(Sets.newHashSet("i", "j", "k", "l"), tensor.type().dimensionNames());
+        assertEquals(Set.of("i", "j", "k", "l"), tensor.type().dimensionNames());
         assertEquals("tensor(i{},j[2],k{},l[2]):{{i:a,j:0,k:c,l:0}:1.0, {i:a,j:0,k:c,l:1}:2.0, " +
                      "{i:a,j:0,k:d,l:0}:5.0, {i:a,j:0,k:d,l:1}:6.0, {i:a,j:1,k:c,l:0}:3.0, {i:a,j:1,k:c,l:1}:4.0, " +
                      "{i:a,j:1,k:d,l:0}:7.0, {i:a,j:1,k:d,l:1}:8.0, {i:b,j:0,k:c,l:0}:9.0, {i:b,j:0,k:c,l:1}:10.0, " +
diff --git a/vespajlib/src/test/java/com/yahoo/tensor/TensorTestCase.java b/vespajlib/src/test/java/com/yahoo/tensor/TensorTestCase.java
index 428c8a83b47..5e392a74bf3 100644
--- a/vespajlib/src/test/java/com/yahoo/tensor/TensorTestCase.java
+++ b/vespajlib/src/test/java/com/yahoo/tensor/TensorTestCase.java
@@ -1,7 +1,6 @@
 // Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
 package com.yahoo.tensor;
 
-import com.google.common.collect.ImmutableList;
 import com.yahoo.tensor.evaluation.MapEvaluationContext;
 import com.yahoo.tensor.evaluation.Name;
 import com.yahoo.tensor.evaluation.VariableTensor;
@@ -154,7 +153,7 @@ public class TensorTestCase {
         Tensor xy = Tensor.from("{{x:0,y:1}:11, {x:1,y:1}:13}");
         double nest1 = y.multiply(x.multiply(xy).sum("x")).sum("y").asDouble();
         double nest2 = x.multiply(xy).sum("x").multiply(y).sum("y").asDouble();
-        double flat = y.multiply(x).multiply(xy).sum(ImmutableList.of("x","y")).asDouble();
+        double flat = y.multiply(x).multiply(xy).sum(List.of("x","y")).asDouble();
         assertEquals(nest1, flat, 0.000000001);
         assertEquals(nest2, flat, 0.000000001);
     }
@@ -176,8 +175,8 @@ public class TensorTestCase {
         assertEquals(Tensor.from("{ {x:1,y:1}:0, {x:2,y:1}:1 }"), tensor1.larger(tensor2));
         assertEquals(Tensor.from("{ {y:1}:50.0 }"), tensor1.matmul(tensor2, "x"));
         assertEquals(Tensor.from("{ {z:1}:3, {z:2}:7 }"), tensor1.rename("x", "z"));
-        assertEquals(Tensor.from("{ {y:1,x:1}:8, {x:1,y:2}:12 }"), tensor1.add(tensor2).rename(ImmutableList.of("x", "y"),
-                                                                                               ImmutableList.of("y", "x")));
+        assertEquals(Tensor.from("{ {y:1,x:1}:8, {x:1,y:2}:12 }"), tensor1.add(tensor2).rename(List.of("x", "y"),
+                                                                                               List.of("y", "x")));
         assertEquals(Tensor.from("{ {x:0,y:0}:0, {x:0,y:1}:0, {x:1,y:0}:0, {x:1,y:1}:1, {x:2,y:0}:0, {x:2,y:1}:2, }"),
                      Tensor.generate(new TensorType.Builder().indexed("x", 3).indexed("y", 2).build(),
                                      (List<Long> indexes) -> (double)indexes.get(0)*indexes.get(1)));
diff --git a/vespajlib/src/test/java/com/yahoo/tensor/functions/MatmulTestCase.java b/vespajlib/src/test/java/com/yahoo/tensor/functions/MatmulTestCase.java
index fb4cb659624..1ac796ae9c5 100644
--- a/vespajlib/src/test/java/com/yahoo/tensor/functions/MatmulTestCase.java
+++ b/vespajlib/src/test/java/com/yahoo/tensor/functions/MatmulTestCase.java
@@ -1,11 +1,12 @@
 // Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
 package com.yahoo.tensor.functions;
 
-import com.google.common.collect.ImmutableList;
 import com.yahoo.tensor.Tensor;
 import com.yahoo.tensor.TensorType;
 import org.junit.Test;
 
+import java.util.List;
+
 import static org.junit.Assert.assertEquals;
 
 /**
@@ -41,7 +42,7 @@ public class MatmulTestCase {
         rb.cell(154,1, 1);
         Tensor r = rb.build();
 
-        Tensor result = a.matmul(b.rename(ImmutableList.of("d0","d1"), ImmutableList.of("d1","d2")), "d1")
+        Tensor result = a.matmul(b.rename(List.of("d0","d1"), List.of("d1","d2")), "d1")
                          .rename("d2","d1");
         assertEquals(r, result);
     }
@@ -90,7 +91,7 @@ public class MatmulTestCase {
         rb.cell(730,1, 1, 1);
         Tensor r = rb.build();
 
-        Tensor result = a.matmul(b.rename(ImmutableList.of("d1","d2"), ImmutableList.of("d2","d3")), "d2")
+        Tensor result = a.matmul(b.rename(List.of("d1","d2"), List.of("d2","d3")), "d2")
                          .rename("d3","d2");
         assertEquals(r, result);
     }
diff --git a/vespajlib/src/test/java/com/yahoo/text/Benchmark.java b/vespajlib/src/test/java/com/yahoo/text/Benchmark.java
deleted file mode 100644
index 292503f462a..00000000000
--- a/vespajlib/src/test/java/com/yahoo/text/Benchmark.java
+++ /dev/null
@@ -1,108 +0,0 @@
-// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
-package com.yahoo.text;
-
-// import com.google.common.base.Preconditions;
-// import com.google.inject.Provider;
-
-import java.lang.reflect.InvocationTargetException;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Objects;
-import java.util.concurrent.Callable;
-import java.util.concurrent.CyclicBarrier;
-import java.util.concurrent.Executors;
-import java.util.concurrent.Future;
-import java.util.concurrent.TimeUnit;
-
-/**
- * @author Simon Thoresen Hult
- */
-class Benchmark {
-
-    public static interface Task {
-        public long run(CyclicBarrier barrier, int numIterations) throws Exception;
-    }
-
-
-    public static class TaskProvider {
-        final Class<? extends Task> taskClass;
-        public Task get() {
-            try {
-                return taskClass.getDeclaredConstructor().newInstance();
-            } catch (InstantiationException | IllegalAccessException | NoSuchMethodException | InvocationTargetException e) {
-                throw new RuntimeException(e);
-            }
-        }
-        public TaskProvider(final Class<? extends Task> taskClass) {
-            this.taskClass = taskClass;
-        }
-    }
-
-    private final TaskProvider taskProvider;
-    private final int numIterationsPerThread;
-    private final int numThreads;
-
-    private Benchmark(Builder builder) {
-        Objects.requireNonNull(builder.taskProvider, "taskProvider");
-/*
-        Preconditions.checkArgument(builder.numIterationsPerThread > 0, "numIterationsPerThread; %s",
-                                    builder.numIterationsPerThread);
-        Preconditions.checkArgument(builder.numThreads > 0, "numThreads; %s",
-                                    builder.numThreads);
-*/
-        taskProvider = builder.taskProvider;
-        numIterationsPerThread = builder.numIterationsPerThread;
-        numThreads = builder.numThreads;
-    }
-
-    public long run() throws Exception {
-        final CyclicBarrier barrier = new CyclicBarrier(numThreads);
-        List<Callable<Long>> clients = new ArrayList<>(numThreads);
-        for (int i = 0; i < numThreads; ++i) {
-            final Task task = taskProvider.get();
-            clients.add(new Callable<Long>() {
-
-                @Override
-                public Long call() throws Exception {
-                    return task.run(barrier, numIterationsPerThread);
-                }
-            });
-        }
-        long maxNanosPerClient = 0;
-        for (Future<Long> result : Executors.newFixedThreadPool(numThreads).invokeAll(clients)) {
-            maxNanosPerClient = Math.max(maxNanosPerClient, result.get());
-        }
-        return TimeUnit.SECONDS.toNanos(1) * numThreads * numIterationsPerThread / maxNanosPerClient;
-    }
-
-    public static class Builder {
-
-        private TaskProvider taskProvider;
-        private int numIterationsPerThread = 1000;
-        private int numThreads = 1;
-
-        public Builder setNumThreads(int numThreads) {
-            this.numThreads = numThreads;
-            return this;
-        }
-
-        public Builder setNumIterationsPerThread(int numIterationsPerThread) {
-            this.numIterationsPerThread = numIterationsPerThread;
-            return this;
-        }
-
-        public Builder setTaskClass(final Class<? extends Task> taskClass) {
-            return setTaskProvider(new TaskProvider(taskClass));
-        }
-
-        public Builder setTaskProvider(TaskProvider taskProvider) {
-            this.taskProvider = taskProvider;
-            return this;
-        }
-
-        public Benchmark build() {
-            return new Benchmark(this);
-        }
-    }
-
-}
diff --git a/vespajlib/src/test/java/com/yahoo/text/Utf8TestCase.java b/vespajlib/src/test/java/com/yahoo/text/Utf8TestCase.java
index 926d19f433f..098eaddacac 100644
--- a/vespajlib/src/test/java/com/yahoo/text/Utf8TestCase.java
+++ b/vespajlib/src/test/java/com/yahoo/text/Utf8TestCase.java
@@ -1,7 +1,6 @@
 // Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
 package com.yahoo.text;
 
-import com.google.common.collect.ImmutableMap;
 import org.junit.Ignore;
 import org.junit.Test;
 
@@ -11,9 +10,9 @@ import java.nio.ByteBuffer;
 import java.nio.charset.CharsetEncoder;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
+import java.util.Map;
 import java.util.function.Function;
 
-import static com.yahoo.text.Lowercase.toLowerCase;
 import static com.yahoo.text.Utf8.calculateBytePositions;
 import static com.yahoo.text.Utf8.calculateStringPositions;
 import static org.hamcrest.CoreMatchers.equalTo;
@@ -21,7 +20,6 @@ import static org.hamcrest.CoreMatchers.is;
 import static org.hamcrest.MatcherAssert.assertThat;
 import static org.junit.Assert.assertArrayEquals;
 import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
 
 /**
  * @author <a href="mailto:borud@yahoo-inc.com">Bjorn Borud</a>
@@ -34,62 +32,6 @@ public class Utf8TestCase {
             0x34, 0x355, 0x2567, 0xfff, 0xe987, 0x100abc
     };
 
-    public void dumpSome() throws java.io.IOException {
-        int i = 32;
-        int j = 3;
-        int cnt = 0;
-        while (i < 0x110000) {
-            if (i < 0xD800 || i >= 0xE000) ++cnt;
-            i += j;
-            ++j;
-        }
-        System.out.println("allocate "+cnt+" array entries");
-        int codes[] = new int[cnt];
-        i = 32;
-        j = 3;
-        cnt = 0;
-        while (i < 0x110000) {
-            if (i < 0xD800 || i >= 0xE000) codes[cnt++] = i;
-            i += j;
-            ++j;
-        }
-        assertEquals(cnt, codes.length);
-        System.out.println("fill "+cnt+" array entries");
-        String str = new String(codes, 0, cnt);
-        byte[] arr = Utf8.toBytes(str);
-        java.io.FileOutputStream fos = new java.io.FileOutputStream("random-long-utf8.dat");
-        fos.write(arr);
-        fos.close();
-    }
-
-    public void dumpMore() throws java.io.IOException {
-        java.text.Normalizer.Form form = java.text.Normalizer.Form.NFKC;
-
-        java.io.FileOutputStream fos = new java.io.FileOutputStream("lowercase-table.dat");
-        for (int i = 0; i < 0x110000; i++) {
-            StringBuilder b = new StringBuilder();
-            b.appendCodePoint(i);
-            String n1 = b.toString();
-            String n2 = java.text.Normalizer.normalize(b, form);
-            if (n1.equals(n2)) {
-                String l = toLowerCase(n1);
-                int chars = l.length();
-                int codes = l.codePointCount(0, chars);
-                if (codes != 1) {
-                    System.out.println("codepoint "+i+" transformed into "+codes+" codepoints: "+n1+" -> "+l);
-                } else {
-                    int lc = l.codePointAt(0);
-                    if (lc != i) {
-                        String o = "lowercase( "+i+" )= "+lc+"\n";
-                        byte[] arr = Utf8.toBytes(o);
-                        fos.write(arr);
-                    }
-                }
-            }
-        }
-        fos.close();
-    }
-
     @Test
     public void testSimple() {
         String s1 = "test";
@@ -322,7 +264,7 @@ public class Utf8TestCase {
             for (char c=0; c < i; c++) {
                 sb.append(c);
             }
-            assertTrue(Arrays.equals(Utf8.toBytesStd(sb.toString()), Utf8.toBytes(sb.toString())));
+            assertArrayEquals(Utf8.toBytesStd(sb.toString()), Utf8.toBytes(sb.toString()));
         }
     }
 
@@ -340,7 +282,7 @@ public class Utf8TestCase {
         byte [] a = Utf8.toBytes(String.valueOf(l));
         byte [] b = Utf8.toAsciiBytes(l);
         if (!Arrays.equals(a, b)) {
-            assertTrue(Arrays.equals(a, b));
+            assertArrayEquals(a, b);
         }
     }
 
@@ -348,8 +290,8 @@ public class Utf8TestCase {
     public void testBoolean() {
         assertEquals("true", String.valueOf(true));
         assertEquals("false", String.valueOf(false));
-        assertTrue(Arrays.equals(Utf8.toAsciiBytes(true), new Utf8String(String.valueOf(true)).getBytes()));
-        assertTrue(Arrays.equals(Utf8.toAsciiBytes(false), new Utf8String(String.valueOf(false)).getBytes()));
+        assertArrayEquals(Utf8.toAsciiBytes(true), new Utf8String(String.valueOf(true)).getBytes());
+        assertArrayEquals(Utf8.toAsciiBytes(false), new Utf8String(String.valueOf(false)).getBytes());
     }
     @Test
     public void testInt()
@@ -358,7 +300,7 @@ public class Utf8TestCase {
             byte [] a = Utf8.toBytes(String.valueOf(l));
             byte [] b = Utf8.toAsciiBytes(l);
             if (!Arrays.equals(a, b)) {
-                assertTrue(Arrays.equals(a, b));
+                assertArrayEquals(a, b);
             }
         }
     }
@@ -369,7 +311,7 @@ public class Utf8TestCase {
             byte [] a = Utf8.toBytes(String.valueOf(l));
             byte [] b = Utf8.toAsciiBytes(l);
             if (!Arrays.equals(a, b)) {
-                assertTrue(Arrays.equals(a, b));
+                assertArrayEquals(a, b);
             }
         }
     }
@@ -561,7 +503,7 @@ public class Utf8TestCase {
         byte[] unicode = "This is just sort of random mix. \u5370\u57df\u60c5\u5831\u53EF\u4EE5\u6709x\u00e9\u00e8".getBytes(StandardCharsets.UTF_8);
         int iterations = 100_000; // Use 100_000+ for benchmarking
 
-        ImmutableMap.of("ascii", ascii, "unicode", unicode).forEach((type, b) -> {
+        Map.of("ascii", ascii, "unicode", unicode).forEach((type, b) -> {
             long time1 = benchmark(() -> decode(Utf8::toString, b, iterations));
             System.out.printf("Utf8::toString of %s string took %d ms\n", type, time1);
             long time2 = benchmark(() -> decode((b1) -> new String(b1, StandardCharsets.UTF_8), b, iterations));
@@ -578,7 +520,7 @@ public class Utf8TestCase {
         String unicode = "This is just sort of random mix. \u5370\u57df\u60c5\u5831\u53EF\u4EE5\u6709x\u00e9\u00e8";
         int iterations = 1_000_000; // Use 1_000_000+ for benchmarking
 
-        ImmutableMap.of("ascii", ascii, "unicode", unicode).forEach((type, s) -> {
+        Map.of("ascii", ascii, "unicode", unicode).forEach((type, s) -> {
             long time1 = benchmark(() -> encode(Utf8::toBytes, s, iterations));
             System.out.printf("Utf8::toBytes of %s string took %d ms\n", type, time1);
             long time2 = benchmark(() -> encode((s1) -> s1.getBytes(StandardCharsets.UTF_8), s, iterations));