http://lucene.apache.org/lucene-parent/lucene-core: Apache Lucene Java Core (The Apache Software Foundation) 
abstract class org.apache.lucene.index.DocValuesIterator extends org.apache.lucene.search.DocIdSetIterator
  minor version: 0
  major version: 59
  flags: flags: (0x0420) ACC_SUPER, ACC_ABSTRACT
  this_class: org.apache.lucene.index.DocValuesIterator
  super_class: org.apache.lucene.search.DocIdSetIterator
{
  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.lucene.index.DocValuesIterator this
         0: .line 23
            aload 0 /* this */
            invokespecial org.apache.lucene.search.DocIdSetIterator.<init>:()V
            return
        end local 0 // org.apache.lucene.index.DocValuesIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/lucene/index/DocValuesIterator;

  public abstract boolean advanceExact(int);
    descriptor: (I)Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws java.io.IOException
    MethodParameters:
        Name  Flags
      target  
}
SourceFile: "DocValuesIterator.java"