https://github.com/eclipse-vertx/vertx-sql-client: The Reactive SQL Client (Eclipse) 
public class io.vertx.sqlclient.SqlConnectOptionsConverter
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: io.vertx.sqlclient.SqlConnectOptionsConverter
  super_class: java.lang.Object
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.vertx.sqlclient.SqlConnectOptionsConverter this
         0: .line 13
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // io.vertx.sqlclient.SqlConnectOptionsConverter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/vertx/sqlclient/SqlConnectOptionsConverter;

  public static void fromJson(java.lang.Iterable<java.util.Map$Entry<java.lang.String, java.lang.Object>>, io.vertx.sqlclient.SqlConnectOptions);
    descriptor: (Ljava/lang/Iterable;Lio/vertx/sqlclient/SqlConnectOptions;)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=6, args_size=2
        start local 0 // java.lang.Iterable json
        start local 1 // io.vertx.sqlclient.SqlConnectOptions obj
         0: .line 17
            aload 0 /* json */
            invokeinterface java.lang.Iterable.iterator:()Ljava/util/Iterator;
            astore 3
            goto 44
      StackMap locals: java.lang.Iterable io.vertx.sqlclient.SqlConnectOptions top java.util.Iterator
      StackMap stack:
         1: aload 3
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast java.util.Map$Entry
            astore 2 /* member */
        start local 2 // java.util.Map$Entry member
         2: .line 18
            aload 2 /* member */
            invokeinterface java.util.Map$Entry.getKey:()Ljava/lang/Object;
            checkcast java.lang.String
            dup
            astore 4
            invokevirtual java.lang.String.hashCode:()I
            lookupswitch { // 10
          -1378858860: 3
           -926053069: 4
           -695378909: 5
              3208616: 6
              3446913: 7
              3599307: 8
            227671157: 9
           1216985755: 10
           1299928989: 11
           1789464955: 12
              default: 44
          }
      StackMap locals: java.lang.Iterable io.vertx.sqlclient.SqlConnectOptions java.util.Map$Entry java.util.Iterator java.lang.String
      StackMap stack:
         3: aload 4
            ldc "tracingPolicy"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 39
            goto 44
      StackMap locals:
      StackMap stack:
         4: aload 4
            ldc "properties"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 34
            goto 44
      StackMap locals:
      StackMap stack:
         5: aload 4
            ldc "cachePreparedStatements"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 13
            goto 44
      StackMap locals:
      StackMap stack:
         6: aload 4
            ldc "host"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 19
            goto 44
      StackMap locals:
      StackMap stack:
         7: aload 4
            ldc "port"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 25
            goto 44
      StackMap locals:
      StackMap stack:
         8: aload 4
            ldc "user"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 42
            goto 44
      StackMap locals:
      StackMap stack:
         9: aload 4
            ldc "preparedStatementCacheMaxSize"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 28
            goto 44
      StackMap locals:
      StackMap stack:
        10: aload 4
            ldc "password"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 22
            goto 44
      StackMap locals:
      StackMap stack:
        11: aload 4
            ldc "preparedStatementCacheSqlLimit"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 31
            goto 44
      StackMap locals:
      StackMap stack:
        12: aload 4
            ldc "database"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 16
            goto 44
        13: .line 20
      StackMap locals:
      StackMap stack:
            aload 2 /* member */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            instanceof java.lang.Boolean
            ifeq 44
        14: .line 21
            aload 1 /* obj */
            aload 2 /* member */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            checkcast java.lang.Boolean
            invokevirtual java.lang.Boolean.booleanValue:()Z
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.setCachePreparedStatements:(Z)Lio/vertx/sqlclient/SqlConnectOptions;
            pop
        15: .line 23
            goto 44
        16: .line 25
      StackMap locals:
      StackMap stack:
            aload 2 /* member */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            instanceof java.lang.String
            ifeq 44
        17: .line 26
            aload 1 /* obj */
            aload 2 /* member */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            checkcast java.lang.String
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.setDatabase:(Ljava/lang/String;)Lio/vertx/sqlclient/SqlConnectOptions;
            pop
        18: .line 28
            goto 44
        19: .line 30
      StackMap locals:
      StackMap stack:
            aload 2 /* member */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            instanceof java.lang.String
            ifeq 44
        20: .line 31
            aload 1 /* obj */
            aload 2 /* member */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            checkcast java.lang.String
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.setHost:(Ljava/lang/String;)Lio/vertx/sqlclient/SqlConnectOptions;
            pop
        21: .line 33
            goto 44
        22: .line 35
      StackMap locals:
      StackMap stack:
            aload 2 /* member */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            instanceof java.lang.String
            ifeq 44
        23: .line 36
            aload 1 /* obj */
            aload 2 /* member */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            checkcast java.lang.String
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.setPassword:(Ljava/lang/String;)Lio/vertx/sqlclient/SqlConnectOptions;
            pop
        24: .line 38
            goto 44
        25: .line 40
      StackMap locals:
      StackMap stack:
            aload 2 /* member */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            instanceof java.lang.Number
            ifeq 44
        26: .line 41
            aload 1 /* obj */
            aload 2 /* member */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            checkcast java.lang.Number
            invokevirtual java.lang.Number.intValue:()I
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.setPort:(I)Lio/vertx/sqlclient/SqlConnectOptions;
            pop
        27: .line 43
            goto 44
        28: .line 45
      StackMap locals:
      StackMap stack:
            aload 2 /* member */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            instanceof java.lang.Number
            ifeq 44
        29: .line 46
            aload 1 /* obj */
            aload 2 /* member */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            checkcast java.lang.Number
            invokevirtual java.lang.Number.intValue:()I
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.setPreparedStatementCacheMaxSize:(I)Lio/vertx/sqlclient/SqlConnectOptions;
            pop
        30: .line 48
            goto 44
        31: .line 50
      StackMap locals:
      StackMap stack:
            aload 2 /* member */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            instanceof java.lang.Number
            ifeq 44
        32: .line 51
            aload 1 /* obj */
            aload 2 /* member */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            checkcast java.lang.Number
            invokevirtual java.lang.Number.intValue:()I
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.setPreparedStatementCacheSqlLimit:(I)Lio/vertx/sqlclient/SqlConnectOptions;
            pop
        33: .line 53
            goto 44
        34: .line 55
      StackMap locals:
      StackMap stack:
            aload 2 /* member */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            instanceof io.vertx.core.json.JsonObject
            ifeq 44
        35: .line 56
            new java.util.LinkedHashMap
            dup
            invokespecial java.util.LinkedHashMap.<init>:()V
            astore 5 /* map */
        start local 5 // java.util.Map map
        36: .line 57
            aload 2 /* member */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            checkcast java.lang.Iterable
            aload 5 /* map */
            invokedynamic accept(Ljava/util/Map;)Ljava/util/function/Consumer;
              Bootstrap: invokestatic java.lang.invoke.LambdaMetafactory.metafactory:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
                Method arguments:
                  (Ljava/lang/Object;)V
                  io/vertx/sqlclient/SqlConnectOptionsConverter.lambda$0(Ljava/util/Map;Ljava/util/Map$Entry;)V (6)
                  (Ljava/util/Map$Entry;)V
            invokeinterface java.lang.Iterable.forEach:(Ljava/util/function/Consumer;)V
        37: .line 61
            aload 1 /* obj */
            aload 5 /* map */
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.setProperties:(Ljava/util/Map;)Lio/vertx/sqlclient/SqlConnectOptions;
            pop
        end local 5 // java.util.Map map
        38: .line 63
            goto 44
        39: .line 65
      StackMap locals:
      StackMap stack:
            aload 2 /* member */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            instanceof java.lang.String
            ifeq 44
        40: .line 66
            aload 1 /* obj */
            aload 2 /* member */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            checkcast java.lang.String
            invokestatic io.vertx.core.tracing.TracingPolicy.valueOf:(Ljava/lang/String;)Lio/vertx/core/tracing/TracingPolicy;
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.setTracingPolicy:(Lio/vertx/core/tracing/TracingPolicy;)Lio/vertx/sqlclient/SqlConnectOptions;
            pop
        41: .line 68
            goto 44
        42: .line 70
      StackMap locals:
      StackMap stack:
            aload 2 /* member */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            instanceof java.lang.String
            ifeq 44
        43: .line 71
            aload 1 /* obj */
            aload 2 /* member */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            checkcast java.lang.String
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.setUser:(Ljava/lang/String;)Lio/vertx/sqlclient/SqlConnectOptions;
            pop
        end local 2 // java.util.Map$Entry member
        44: .line 17
      StackMap locals: java.lang.Iterable io.vertx.sqlclient.SqlConnectOptions top java.util.Iterator
      StackMap stack:
            aload 3
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 1
        45: .line 76
            return
        end local 1 // io.vertx.sqlclient.SqlConnectOptions obj
        end local 0 // java.lang.Iterable json
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0   46     0    json  Ljava/lang/Iterable<Ljava/util/Map$Entry<Ljava/lang/String;Ljava/lang/Object;>;>;
            0   46     1     obj  Lio/vertx/sqlclient/SqlConnectOptions;
            2   44     2  member  Ljava/util/Map$Entry<Ljava/lang/String;Ljava/lang/Object;>;
           36   38     5     map  Ljava/util/Map<Ljava/lang/String;Ljava/lang/String;>;
    Signature: (Ljava/lang/Iterable<Ljava/util/Map$Entry<Ljava/lang/String;Ljava/lang/Object;>;>;Lio/vertx/sqlclient/SqlConnectOptions;)V
    MethodParameters:
      Name  Flags
      json  
      obj   

  public static void toJson(io.vertx.sqlclient.SqlConnectOptions, io.vertx.core.json.JsonObject);
    descriptor: (Lio/vertx/sqlclient/SqlConnectOptions;Lio/vertx/core/json/JsonObject;)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.vertx.sqlclient.SqlConnectOptions obj
        start local 1 // io.vertx.core.json.JsonObject json
         0: .line 79
            aload 0 /* obj */
            aload 1 /* json */
            invokevirtual io.vertx.core.json.JsonObject.getMap:()Ljava/util/Map;
            invokestatic io.vertx.sqlclient.SqlConnectOptionsConverter.toJson:(Lio/vertx/sqlclient/SqlConnectOptions;Ljava/util/Map;)V
         1: .line 80
            return
        end local 1 // io.vertx.core.json.JsonObject json
        end local 0 // io.vertx.sqlclient.SqlConnectOptions obj
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0   obj  Lio/vertx/sqlclient/SqlConnectOptions;
            0    2     1  json  Lio/vertx/core/json/JsonObject;
    MethodParameters:
      Name  Flags
      obj   
      json  

  public static void toJson(io.vertx.sqlclient.SqlConnectOptions, java.util.Map<java.lang.String, java.lang.Object>);
    descriptor: (Lio/vertx/sqlclient/SqlConnectOptions;Ljava/util/Map;)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=3, args_size=2
        start local 0 // io.vertx.sqlclient.SqlConnectOptions obj
        start local 1 // java.util.Map json
         0: .line 83
            aload 1 /* json */
            ldc "cachePreparedStatements"
            aload 0 /* obj */
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.getCachePreparedStatements:()Z
            invokestatic java.lang.Boolean.valueOf:(Z)Ljava/lang/Boolean;
            invokeinterface java.util.Map.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         1: .line 84
            aload 0 /* obj */
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.getDatabase:()Ljava/lang/String;
            ifnull 3
         2: .line 85
            aload 1 /* json */
            ldc "database"
            aload 0 /* obj */
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.getDatabase:()Ljava/lang/String;
            invokeinterface java.util.Map.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         3: .line 87
      StackMap locals:
      StackMap stack:
            aload 0 /* obj */
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.getHost:()Ljava/lang/String;
            ifnull 5
         4: .line 88
            aload 1 /* json */
            ldc "host"
            aload 0 /* obj */
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.getHost:()Ljava/lang/String;
            invokeinterface java.util.Map.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         5: .line 90
      StackMap locals:
      StackMap stack:
            aload 0 /* obj */
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.getPassword:()Ljava/lang/String;
            ifnull 7
         6: .line 91
            aload 1 /* json */
            ldc "password"
            aload 0 /* obj */
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.getPassword:()Ljava/lang/String;
            invokeinterface java.util.Map.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         7: .line 93
      StackMap locals:
      StackMap stack:
            aload 1 /* json */
            ldc "port"
            aload 0 /* obj */
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.getPort:()I
            invokestatic java.lang.Integer.valueOf:(I)Ljava/lang/Integer;
            invokeinterface java.util.Map.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         8: .line 94
            aload 1 /* json */
            ldc "preparedStatementCacheMaxSize"
            aload 0 /* obj */
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.getPreparedStatementCacheMaxSize:()I
            invokestatic java.lang.Integer.valueOf:(I)Ljava/lang/Integer;
            invokeinterface java.util.Map.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         9: .line 95
            aload 0 /* obj */
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.getProperties:()Ljava/util/Map;
            ifnull 13
        10: .line 96
            new io.vertx.core.json.JsonObject
            dup
            invokespecial io.vertx.core.json.JsonObject.<init>:()V
            astore 2 /* map */
        start local 2 // io.vertx.core.json.JsonObject map
        11: .line 97
            aload 0 /* obj */
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.getProperties:()Ljava/util/Map;
            aload 2 /* map */
            invokedynamic accept(Lio/vertx/core/json/JsonObject;)Ljava/util/function/BiConsumer;
              Bootstrap: invokestatic java.lang.invoke.LambdaMetafactory.metafactory:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
                Method arguments:
                  (Ljava/lang/Object;Ljava/lang/Object;)V
                  io/vertx/sqlclient/SqlConnectOptionsConverter.lambda$1(Lio/vertx/core/json/JsonObject;Ljava/lang/String;Ljava/lang/String;)V (6)
                  (Ljava/lang/String;Ljava/lang/String;)V
            invokeinterface java.util.Map.forEach:(Ljava/util/function/BiConsumer;)V
        12: .line 98
            aload 1 /* json */
            ldc "properties"
            aload 2 /* map */
            invokeinterface java.util.Map.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
        end local 2 // io.vertx.core.json.JsonObject map
        13: .line 100
      StackMap locals:
      StackMap stack:
            aload 0 /* obj */
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.getTracingPolicy:()Lio/vertx/core/tracing/TracingPolicy;
            ifnull 15
        14: .line 101
            aload 1 /* json */
            ldc "tracingPolicy"
            aload 0 /* obj */
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.getTracingPolicy:()Lio/vertx/core/tracing/TracingPolicy;
            invokevirtual io.vertx.core.tracing.TracingPolicy.name:()Ljava/lang/String;
            invokeinterface java.util.Map.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
        15: .line 103
      StackMap locals:
      StackMap stack:
            aload 0 /* obj */
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.getUser:()Ljava/lang/String;
            ifnull 17
        16: .line 104
            aload 1 /* json */
            ldc "user"
            aload 0 /* obj */
            invokevirtual io.vertx.sqlclient.SqlConnectOptions.getUser:()Ljava/lang/String;
            invokeinterface java.util.Map.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
        17: .line 106
      StackMap locals:
      StackMap stack:
            return
        end local 1 // java.util.Map json
        end local 0 // io.vertx.sqlclient.SqlConnectOptions obj
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0   18     0   obj  Lio/vertx/sqlclient/SqlConnectOptions;
            0   18     1  json  Ljava/util/Map<Ljava/lang/String;Ljava/lang/Object;>;
           11   13     2   map  Lio/vertx/core/json/JsonObject;
    Signature: (Lio/vertx/sqlclient/SqlConnectOptions;Ljava/util/Map<Ljava/lang/String;Ljava/lang/Object;>;)V
    MethodParameters:
      Name  Flags
      obj   
      json  

  private static void lambda$0(java.util.Map, java.util.Map$Entry);
    descriptor: (Ljava/util/Map;Ljava/util/Map$Entry;)V
    flags: (0x100a) ACC_PRIVATE, ACC_STATIC, ACC_SYNTHETIC
    Code:
      stack=3, locals=2, args_size=2
        start local 1 // java.util.Map$Entry entry
         0: .line 58
            aload 1 /* entry */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            instanceof java.lang.String
            ifeq 2
         1: .line 59
            aload 0
            aload 1 /* entry */
            invokeinterface java.util.Map$Entry.getKey:()Ljava/lang/Object;
            checkcast java.lang.String
            aload 1 /* entry */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            checkcast java.lang.String
            invokeinterface java.util.Map.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         2: .line 60
      StackMap locals:
      StackMap stack:
            return
        end local 1 // java.util.Map$Entry entry
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    3     1  entry  Ljava/util/Map$Entry<Ljava/lang/String;Ljava/lang/Object;>;

  private static void lambda$1(io.vertx.core.json.JsonObject, java.lang.String, java.lang.String);
    descriptor: (Lio/vertx/core/json/JsonObject;Ljava/lang/String;Ljava/lang/String;)V
    flags: (0x100a) ACC_PRIVATE, ACC_STATIC, ACC_SYNTHETIC
    Code:
      stack=3, locals=3, args_size=3
        start local 1 // java.lang.String key
        start local 2 // java.lang.String value
         0: .line 97
            aload 0
            aload 1 /* key */
            aload 2 /* value */
            invokevirtual io.vertx.core.json.JsonObject.put:(Ljava/lang/String;Ljava/lang/Object;)Lio/vertx/core/json/JsonObject;
            return
        end local 2 // java.lang.String value
        end local 1 // java.lang.String key
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     1    key  Ljava/lang/String;
            0    1     2  value  Ljava/lang/String;
}
SourceFile: "SqlConnectOptionsConverter.java"
InnerClasses:
  public final Lookup = java.lang.invoke.MethodHandles$Lookup of java.lang.invoke.MethodHandles
  public abstract Entry = java.util.Map$Entry of java.util.Map