https://www.graalvm.org/ 
final class com.oracle.truffle.object.ConsListPropertyMap$MapEntryImpl implements java.util.Map$Entry<java.lang.Object, com.oracle.truffle.api.object.Property>
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: com.oracle.truffle.object.ConsListPropertyMap$MapEntryImpl
  super_class: java.lang.Object
{
  private final com.oracle.truffle.api.object.Property backingProperty;
    descriptor: Lcom/oracle/truffle/api/object/Property;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  void <init>(com.oracle.truffle.api.object.Property);
    descriptor: (Lcom/oracle/truffle/api/object/Property;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.object.ConsListPropertyMap$MapEntryImpl this
        start local 1 // com.oracle.truffle.api.object.Property backingProperty
         0: .line 329
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 330
            aload 0 /* this */
            aload 1 /* backingProperty */
            putfield com.oracle.truffle.object.ConsListPropertyMap$MapEntryImpl.backingProperty:Lcom/oracle/truffle/api/object/Property;
         2: .line 331
            return
        end local 1 // com.oracle.truffle.api.object.Property backingProperty
        end local 0 // com.oracle.truffle.object.ConsListPropertyMap$MapEntryImpl this
      LocalVariableTable:
        Start  End  Slot             Name  Signature
            0    3     0             this  Lcom/oracle/truffle/object/ConsListPropertyMap$MapEntryImpl;
            0    3     1  backingProperty  Lcom/oracle/truffle/api/object/Property;
    MethodParameters:
                 Name  Flags
      backingProperty  

  public java.lang.Object getKey();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.object.ConsListPropertyMap$MapEntryImpl this
         0: .line 334
            aload 0 /* this */
            getfield com.oracle.truffle.object.ConsListPropertyMap$MapEntryImpl.backingProperty:Lcom/oracle/truffle/api/object/Property;
            invokevirtual com.oracle.truffle.api.object.Property.getKey:()Ljava/lang/Object;
            areturn
        end local 0 // com.oracle.truffle.object.ConsListPropertyMap$MapEntryImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/object/ConsListPropertyMap$MapEntryImpl;

  public com.oracle.truffle.api.object.Property getValue();
    descriptor: ()Lcom/oracle/truffle/api/object/Property;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.object.ConsListPropertyMap$MapEntryImpl this
         0: .line 338
            aload 0 /* this */
            getfield com.oracle.truffle.object.ConsListPropertyMap$MapEntryImpl.backingProperty:Lcom/oracle/truffle/api/object/Property;
            areturn
        end local 0 // com.oracle.truffle.object.ConsListPropertyMap$MapEntryImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/object/ConsListPropertyMap$MapEntryImpl;

  public com.oracle.truffle.api.object.Property setValue(com.oracle.truffle.api.object.Property);
    descriptor: (Lcom/oracle/truffle/api/object/Property;)Lcom/oracle/truffle/api/object/Property;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=2, args_size=2
        start local 0 // com.oracle.truffle.object.ConsListPropertyMap$MapEntryImpl this
        start local 1 // com.oracle.truffle.api.object.Property value
         0: .line 342
            invokestatic com.oracle.truffle.object.ConsListPropertyMap.unmodifiableException:()Ljava/lang/RuntimeException;
            athrow
        end local 1 // com.oracle.truffle.api.object.Property value
        end local 0 // com.oracle.truffle.object.ConsListPropertyMap$MapEntryImpl this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0   this  Lcom/oracle/truffle/object/ConsListPropertyMap$MapEntryImpl;
            0    1     1  value  Lcom/oracle/truffle/api/object/Property;
    MethodParameters:
       Name  Flags
      value  

  public java.lang.Object setValue(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Ljava/lang/Object;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            aload 1
            checkcast com.oracle.truffle.api.object.Property
            invokevirtual com.oracle.truffle.object.ConsListPropertyMap$MapEntryImpl.setValue:(Lcom/oracle/truffle/api/object/Property;)Lcom/oracle/truffle/api/object/Property;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public java.lang.Object getValue();
    descriptor: ()Ljava/lang/Object;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual com.oracle.truffle.object.ConsListPropertyMap$MapEntryImpl.getValue:()Lcom/oracle/truffle/api/object/Property;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Ljava/lang/Object;Ljava/util/Map$Entry<Ljava/lang/Object;Lcom/oracle/truffle/api/object/Property;>;
SourceFile: "ConsListPropertyMap.java"
NestHost: com.oracle.truffle.object.ConsListPropertyMap
InnerClasses:
  private final MapEntryImpl = com.oracle.truffle.object.ConsListPropertyMap$MapEntryImpl of com.oracle.truffle.object.ConsListPropertyMap
  public abstract Entry = java.util.Map$Entry of java.util.Map