https://lucene.apache.org/lucene-parent/lucene-core: Apache Lucene Java Core (The Apache Software Foundation) 
public final class org.apache.lucene.search.DocValuesFieldExistsQuery extends org.apache.lucene.search.Query
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.apache.lucene.search.DocValuesFieldExistsQuery
  super_class: org.apache.lucene.search.Query
{
  private final java.lang.String field;
    descriptor: Ljava/lang/String;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private static volatile int[] $SWITCH_TABLE$org$apache$lucene$index$DocValuesType;
    descriptor: [I
    flags: (0x104a) ACC_PRIVATE, ACC_STATIC, ACC_VOLATILE, ACC_SYNTHETIC

  public void <init>(java.lang.String);
    descriptor: (Ljava/lang/String;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.lucene.search.DocValuesFieldExistsQuery this
        start local 1 // java.lang.String field
         0: .line 38
            aload 0 /* this */
            invokespecial org.apache.lucene.search.Query.<init>:()V
         1: .line 39
            aload 0 /* this */
            aload 1 /* field */
            invokestatic java.util.Objects.requireNonNull:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast java.lang.String
            putfield org.apache.lucene.search.DocValuesFieldExistsQuery.field:Ljava/lang/String;
         2: .line 40
            return
        end local 1 // java.lang.String field
        end local 0 // org.apache.lucene.search.DocValuesFieldExistsQuery this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    3     0   this  Lorg/apache/lucene/search/DocValuesFieldExistsQuery;
            0    3     1  field  Ljava/lang/String;
    MethodParameters:
       Name  Flags
      field  

  public java.lang.String getField();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.lucene.search.DocValuesFieldExistsQuery this
         0: .line 43
            aload 0 /* this */
            getfield org.apache.lucene.search.DocValuesFieldExistsQuery.field:Ljava/lang/String;
            areturn
        end local 0 // org.apache.lucene.search.DocValuesFieldExistsQuery this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/lucene/search/DocValuesFieldExistsQuery;

  public boolean equals(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.lucene.search.DocValuesFieldExistsQuery this
        start local 1 // java.lang.Object other
         0: .line 48
            aload 0 /* this */
            aload 1 /* other */
            invokevirtual org.apache.lucene.search.DocValuesFieldExistsQuery.sameClassAs:(Ljava/lang/Object;)Z
            ifeq 3
         1: .line 49
            aload 0 /* this */
            getfield org.apache.lucene.search.DocValuesFieldExistsQuery.field:Ljava/lang/String;
            aload 1 /* other */
            checkcast org.apache.lucene.search.DocValuesFieldExistsQuery
            getfield org.apache.lucene.search.DocValuesFieldExistsQuery.field:Ljava/lang/String;
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifeq 3
         2: .line 48
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         3: iconst_0
            ireturn
        end local 1 // java.lang.Object other
        end local 0 // org.apache.lucene.search.DocValuesFieldExistsQuery this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    4     0   this  Lorg/apache/lucene/search/DocValuesFieldExistsQuery;
            0    4     1  other  Ljava/lang/Object;
    MethodParameters:
       Name  Flags
      other  

  public int hashCode();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.apache.lucene.search.DocValuesFieldExistsQuery this
         0: .line 54
            bipush 31
            aload 0 /* this */
            invokevirtual org.apache.lucene.search.DocValuesFieldExistsQuery.classHash:()I
            imul
            aload 0 /* this */
            getfield org.apache.lucene.search.DocValuesFieldExistsQuery.field:Ljava/lang/String;
            invokevirtual java.lang.String.hashCode:()I
            iadd
            ireturn
        end local 0 // org.apache.lucene.search.DocValuesFieldExistsQuery this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/lucene/search/DocValuesFieldExistsQuery;

  public java.lang.String toString(java.lang.String);
    descriptor: (Ljava/lang/String;)Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // org.apache.lucene.search.DocValuesFieldExistsQuery this
        start local 1 // java.lang.String field
         0: .line 59
            new java.lang.StringBuilder
            dup
            ldc "DocValuesFieldExistsQuery [field="
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* this */
            getfield org.apache.lucene.search.DocValuesFieldExistsQuery.field:Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            ldc "]"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
        end local 1 // java.lang.String field
        end local 0 // org.apache.lucene.search.DocValuesFieldExistsQuery this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0   this  Lorg/apache/lucene/search/DocValuesFieldExistsQuery;
            0    1     1  field  Ljava/lang/String;
    MethodParameters:
       Name  Flags
      field  

  public void visit(org.apache.lucene.search.QueryVisitor);
    descriptor: (Lorg/apache/lucene/search/QueryVisitor;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.lucene.search.DocValuesFieldExistsQuery this
        start local 1 // org.apache.lucene.search.QueryVisitor visitor
         0: .line 64
            aload 1 /* visitor */
            aload 0 /* this */
            getfield org.apache.lucene.search.DocValuesFieldExistsQuery.field:Ljava/lang/String;
            invokevirtual org.apache.lucene.search.QueryVisitor.acceptField:(Ljava/lang/String;)Z
            ifeq 2
         1: .line 65
            aload 1 /* visitor */
            aload 0 /* this */
            invokevirtual org.apache.lucene.search.QueryVisitor.visitLeaf:(Lorg/apache/lucene/search/Query;)V
         2: .line 67
      StackMap locals:
      StackMap stack:
            return
        end local 1 // org.apache.lucene.search.QueryVisitor visitor
        end local 0 // org.apache.lucene.search.DocValuesFieldExistsQuery this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    3     0     this  Lorg/apache/lucene/search/DocValuesFieldExistsQuery;
            0    3     1  visitor  Lorg/apache/lucene/search/QueryVisitor;
    MethodParameters:
         Name  Flags
      visitor  

  public org.apache.lucene.search.Weight createWeight(org.apache.lucene.search.IndexSearcher, org.apache.lucene.search.ScoreMode, float);
    descriptor: (Lorg/apache/lucene/search/IndexSearcher;Lorg/apache/lucene/search/ScoreMode;F)Lorg/apache/lucene/search/Weight;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=4, args_size=4
        start local 0 // org.apache.lucene.search.DocValuesFieldExistsQuery this
        start local 1 // org.apache.lucene.search.IndexSearcher searcher
        start local 2 // org.apache.lucene.search.ScoreMode scoreMode
        start local 3 // float boost
         0: .line 71
            new org.apache.lucene.search.DocValuesFieldExistsQuery$1
            dup
            aload 0 /* this */
            aload 0 /* this */
            fload 3 /* boost */
            aload 2 /* scoreMode */
            invokespecial org.apache.lucene.search.DocValuesFieldExistsQuery$1.<init>:(Lorg/apache/lucene/search/DocValuesFieldExistsQuery;Lorg/apache/lucene/search/Query;FLorg/apache/lucene/search/ScoreMode;)V
            areturn
        end local 3 // float boost
        end local 2 // org.apache.lucene.search.ScoreMode scoreMode
        end local 1 // org.apache.lucene.search.IndexSearcher searcher
        end local 0 // org.apache.lucene.search.DocValuesFieldExistsQuery this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    1     0       this  Lorg/apache/lucene/search/DocValuesFieldExistsQuery;
            0    1     1   searcher  Lorg/apache/lucene/search/IndexSearcher;
            0    1     2  scoreMode  Lorg/apache/lucene/search/ScoreMode;
            0    1     3      boost  F
    MethodParameters:
           Name  Flags
      searcher   
      scoreMode  
      boost      

  public static org.apache.lucene.search.DocIdSetIterator getDocValuesDocIdSetIterator(java.lang.String, org.apache.lucene.index.LeafReader);
    descriptor: (Ljava/lang/String;Lorg/apache/lucene/index/LeafReader;)Lorg/apache/lucene/search/DocIdSetIterator;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=4, args_size=2
        start local 0 // java.lang.String field
        start local 1 // org.apache.lucene.index.LeafReader reader
         0: .line 94
            aload 1 /* reader */
            invokevirtual org.apache.lucene.index.LeafReader.getFieldInfos:()Lorg/apache/lucene/index/FieldInfos;
            aload 0 /* field */
            invokevirtual org.apache.lucene.index.FieldInfos.fieldInfo:(Ljava/lang/String;)Lorg/apache/lucene/index/FieldInfo;
            astore 2 /* fieldInfo */
        start local 2 // org.apache.lucene.index.FieldInfo fieldInfo
         1: .line 96
            aload 2 /* fieldInfo */
            ifnull 17
         2: .line 97
            invokestatic org.apache.lucene.search.DocValuesFieldExistsQuery.$SWITCH_TABLE$org$apache$lucene$index$DocValuesType:()[I
            aload 2 /* fieldInfo */
            invokevirtual org.apache.lucene.index.FieldInfo.getDocValuesType:()Lorg/apache/lucene/index/DocValuesType;
            invokevirtual org.apache.lucene.index.DocValuesType.ordinal:()I
            iaload
            tableswitch { // 1 - 6
                    1: 3
                    2: 5
                    3: 7
                    4: 9
                    5: 11
                    6: 13
              default: 15
          }
         3: .line 99
      StackMap locals: org.apache.lucene.index.FieldInfo
      StackMap stack:
            aconst_null
            astore 3 /* iterator */
        start local 3 // org.apache.lucene.search.DocIdSetIterator iterator
         4: .line 100
            goto 16
        end local 3 // org.apache.lucene.search.DocIdSetIterator iterator
         5: .line 102
      StackMap locals:
      StackMap stack:
            aload 1 /* reader */
            aload 0 /* field */
            invokevirtual org.apache.lucene.index.LeafReader.getNumericDocValues:(Ljava/lang/String;)Lorg/apache/lucene/index/NumericDocValues;
            astore 3 /* iterator */
        start local 3 // org.apache.lucene.search.DocIdSetIterator iterator
         6: .line 103
            goto 16
        end local 3 // org.apache.lucene.search.DocIdSetIterator iterator
         7: .line 105
      StackMap locals:
      StackMap stack:
            aload 1 /* reader */
            aload 0 /* field */
            invokevirtual org.apache.lucene.index.LeafReader.getBinaryDocValues:(Ljava/lang/String;)Lorg/apache/lucene/index/BinaryDocValues;
            astore 3 /* iterator */
        start local 3 // org.apache.lucene.search.DocIdSetIterator iterator
         8: .line 106
            goto 16
        end local 3 // org.apache.lucene.search.DocIdSetIterator iterator
         9: .line 108
      StackMap locals:
      StackMap stack:
            aload 1 /* reader */
            aload 0 /* field */
            invokevirtual org.apache.lucene.index.LeafReader.getSortedDocValues:(Ljava/lang/String;)Lorg/apache/lucene/index/SortedDocValues;
            astore 3 /* iterator */
        start local 3 // org.apache.lucene.search.DocIdSetIterator iterator
        10: .line 109
            goto 16
        end local 3 // org.apache.lucene.search.DocIdSetIterator iterator
        11: .line 111
      StackMap locals:
      StackMap stack:
            aload 1 /* reader */
            aload 0 /* field */
            invokevirtual org.apache.lucene.index.LeafReader.getSortedNumericDocValues:(Ljava/lang/String;)Lorg/apache/lucene/index/SortedNumericDocValues;
            astore 3 /* iterator */
        start local 3 // org.apache.lucene.search.DocIdSetIterator iterator
        12: .line 112
            goto 16
        end local 3 // org.apache.lucene.search.DocIdSetIterator iterator
        13: .line 114
      StackMap locals:
      StackMap stack:
            aload 1 /* reader */
            aload 0 /* field */
            invokevirtual org.apache.lucene.index.LeafReader.getSortedSetDocValues:(Ljava/lang/String;)Lorg/apache/lucene/index/SortedSetDocValues;
            astore 3 /* iterator */
        start local 3 // org.apache.lucene.search.DocIdSetIterator iterator
        14: .line 115
            goto 16
        end local 3 // org.apache.lucene.search.DocIdSetIterator iterator
        15: .line 117
      StackMap locals:
      StackMap stack:
            new java.lang.AssertionError
            dup
            invokespecial java.lang.AssertionError.<init>:()V
            athrow
        start local 3 // org.apache.lucene.search.DocIdSetIterator iterator
        16: .line 119
      StackMap locals: org.apache.lucene.search.DocIdSetIterator
      StackMap stack:
            aload 3 /* iterator */
            areturn
        end local 3 // org.apache.lucene.search.DocIdSetIterator iterator
        17: .line 121
      StackMap locals:
      StackMap stack:
            aconst_null
            areturn
        end local 2 // org.apache.lucene.index.FieldInfo fieldInfo
        end local 1 // org.apache.lucene.index.LeafReader reader
        end local 0 // java.lang.String field
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   18     0      field  Ljava/lang/String;
            0   18     1     reader  Lorg/apache/lucene/index/LeafReader;
            1   18     2  fieldInfo  Lorg/apache/lucene/index/FieldInfo;
            4    5     3   iterator  Lorg/apache/lucene/search/DocIdSetIterator;
            6    7     3   iterator  Lorg/apache/lucene/search/DocIdSetIterator;
            8    9     3   iterator  Lorg/apache/lucene/search/DocIdSetIterator;
           10   11     3   iterator  Lorg/apache/lucene/search/DocIdSetIterator;
           12   13     3   iterator  Lorg/apache/lucene/search/DocIdSetIterator;
           14   15     3   iterator  Lorg/apache/lucene/search/DocIdSetIterator;
           16   17     3   iterator  Lorg/apache/lucene/search/DocIdSetIterator;
    Exceptions:
      throws java.io.IOException
    MethodParameters:
        Name  Flags
      field   
      reader  

  static int[] $SWITCH_TABLE$org$apache$lucene$index$DocValuesType();
    descriptor: ()[I
    flags: (0x1008) ACC_STATIC, ACC_SYNTHETIC
    Code:
      stack=3, locals=1, args_size=0
         0: .line 32
            getstatic org.apache.lucene.search.DocValuesFieldExistsQuery.$SWITCH_TABLE$org$apache$lucene$index$DocValuesType:[I
            dup
            ifnull 1
            areturn
      StackMap locals:
      StackMap stack: int[]
         1: pop
            invokestatic org.apache.lucene.index.DocValuesType.values:()[Lorg/apache/lucene/index/DocValuesType;
            arraylength
            newarray 10
            astore 0
         2: aload 0
            getstatic org.apache.lucene.index.DocValuesType.BINARY:Lorg/apache/lucene/index/DocValuesType;
            invokevirtual org.apache.lucene.index.DocValuesType.ordinal:()I
            iconst_3
            iastore
         3: goto 5
      StackMap locals: int[]
      StackMap stack: java.lang.NoSuchFieldError
         4: pop
      StackMap locals:
      StackMap stack:
         5: aload 0
            getstatic org.apache.lucene.index.DocValuesType.NONE:Lorg/apache/lucene/index/DocValuesType;
            invokevirtual org.apache.lucene.index.DocValuesType.ordinal:()I
            iconst_1
            iastore
         6: goto 8
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
         7: pop
      StackMap locals:
      StackMap stack:
         8: aload 0
            getstatic org.apache.lucene.index.DocValuesType.NUMERIC:Lorg/apache/lucene/index/DocValuesType;
            invokevirtual org.apache.lucene.index.DocValuesType.ordinal:()I
            iconst_2
            iastore
         9: goto 11
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        10: pop
      StackMap locals:
      StackMap stack:
        11: aload 0
            getstatic org.apache.lucene.index.DocValuesType.SORTED:Lorg/apache/lucene/index/DocValuesType;
            invokevirtual org.apache.lucene.index.DocValuesType.ordinal:()I
            iconst_4
            iastore
        12: goto 14
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        13: pop
      StackMap locals:
      StackMap stack:
        14: aload 0
            getstatic org.apache.lucene.index.DocValuesType.SORTED_NUMERIC:Lorg/apache/lucene/index/DocValuesType;
            invokevirtual org.apache.lucene.index.DocValuesType.ordinal:()I
            iconst_5
            iastore
        15: goto 17
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        16: pop
      StackMap locals:
      StackMap stack:
        17: aload 0
            getstatic org.apache.lucene.index.DocValuesType.SORTED_SET:Lorg/apache/lucene/index/DocValuesType;
            invokevirtual org.apache.lucene.index.DocValuesType.ordinal:()I
            bipush 6
            iastore
        18: goto 20
      StackMap locals:
      StackMap stack: java.lang.NoSuchFieldError
        19: pop
      StackMap locals:
      StackMap stack:
        20: aload 0
            dup
            putstatic org.apache.lucene.search.DocValuesFieldExistsQuery.$SWITCH_TABLE$org$apache$lucene$index$DocValuesType:[I
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
      Exception table:
        from    to  target  type
           2     3       4  Class java.lang.NoSuchFieldError
           5     6       7  Class java.lang.NoSuchFieldError
           8     9      10  Class java.lang.NoSuchFieldError
          11    12      13  Class java.lang.NoSuchFieldError
          14    15      16  Class java.lang.NoSuchFieldError
          17    18      19  Class java.lang.NoSuchFieldError
}
SourceFile: "DocValuesFieldExistsQuery.java"
NestMembers:
  org.apache.lucene.search.DocValuesFieldExistsQuery$1
InnerClasses:
  org.apache.lucene.search.DocValuesFieldExistsQuery$1