https://www.graalvm.org/ 
interface com.oracle.truffle.object.LinkedImmutableMap<K, V> extends com.oracle.truffle.object.ImmutableMap<K, V>
  minor version: 0
  major version: 59
  flags: flags: (0x0600) ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.oracle.truffle.object.LinkedImmutableMap
  super_class: java.lang.Object
{
  public abstract com.oracle.truffle.object.LinkedImmutableMap$LinkedEntry<K, V> getEntry(K);
    descriptor: (Ljava/lang/Object;)Lcom/oracle/truffle/object/LinkedImmutableMap$LinkedEntry;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: (TK;)Lcom/oracle/truffle/object/LinkedImmutableMap$LinkedEntry<TK;TV;>;
    MethodParameters:
      Name  Flags
      key   
}
Signature: <K:Ljava/lang/Object;V:Ljava/lang/Object;>Ljava/lang/Object;Lcom/oracle/truffle/object/ImmutableMap<TK;TV;>;
SourceFile: "LinkedImmutableMap.java"
NestMembers:
  com.oracle.truffle.object.LinkedImmutableMap$LinkedEntry  com.oracle.truffle.object.LinkedImmutableMap$LinkedEntryIterator  com.oracle.truffle.object.LinkedImmutableMap$LinkedIterator  com.oracle.truffle.object.LinkedImmutableMap$LinkedKeyIterator  com.oracle.truffle.object.LinkedImmutableMap$LinkedValueIterator
InnerClasses:
  public abstract LinkedEntry = com.oracle.truffle.object.LinkedImmutableMap$LinkedEntry of com.oracle.truffle.object.LinkedImmutableMap
  public final LinkedEntryIterator = com.oracle.truffle.object.LinkedImmutableMap$LinkedEntryIterator of com.oracle.truffle.object.LinkedImmutableMap
  public abstract LinkedIterator = com.oracle.truffle.object.LinkedImmutableMap$LinkedIterator of com.oracle.truffle.object.LinkedImmutableMap
  public final LinkedKeyIterator = com.oracle.truffle.object.LinkedImmutableMap$LinkedKeyIterator of com.oracle.truffle.object.LinkedImmutableMap
  public final LinkedValueIterator = com.oracle.truffle.object.LinkedImmutableMap$LinkedValueIterator of com.oracle.truffle.object.LinkedImmutableMap