https://github.com/FasterXML/jackson-dataformat-xml: Data format extension for Jackson (http://jackson.codehaus.org) to offer alternative support for serializing POJOs as XML and deserializing XML as pojos. Support implemented on top of Stax API (javax.xml.stream), by implementing core Jackson Streaming API types like JsonGenerator, JsonParser and JsonFactory. Some data-binding types overridden as well (ObjectMapper sub-classed as XmlMapper). (FasterXML)
  • Tatu Saloranta 
public class com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter implements com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Indenter, java.io.Serializable
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter
  super_class: java.lang.Object
{
  private static final long serialVersionUID;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  static final java.lang.String SYSTEM_LINE_SEPARATOR;
    descriptor: Ljava/lang/String;
    flags: (0x0018) ACC_STATIC, ACC_FINAL

  static final int SPACE_COUNT;
    descriptor: I
    flags: (0x0018) ACC_STATIC, ACC_FINAL
    ConstantValue: 64

  static final char[] SPACES;
    descriptor: [C
    flags: (0x0018) ACC_STATIC, ACC_FINAL

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=1, args_size=0
         0: .line 511
            aconst_null
            astore 0 /* lf */
        start local 0 // java.lang.String lf
         1: .line 513
            ldc "line.separator"
            invokestatic java.lang.System.getProperty:(Ljava/lang/String;)Ljava/lang/String;
            astore 0 /* lf */
         2: .line 514
            goto 4
      StackMap locals: java.lang.String
      StackMap stack: java.lang.Throwable
         3: pop
         4: .line 515
      StackMap locals:
      StackMap stack:
            aload 0 /* lf */
            ifnonnull 5
            ldc "\n"
            goto 6
      StackMap locals:
      StackMap stack:
         5: aload 0 /* lf */
      StackMap locals:
      StackMap stack: java.lang.String
         6: putstatic com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter.SYSTEM_LINE_SEPARATOR:Ljava/lang/String;
        end local 0 // java.lang.String lf
         7: .line 519
            bipush 64
            newarray 5
            putstatic com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter.SPACES:[C
         8: .line 521
            getstatic com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter.SPACES:[C
            bipush 32
            invokestatic java.util.Arrays.fill:([CC)V
         9: .line 522
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            1    7     0    lf  Ljava/lang/String;
      Exception table:
        from    to  target  type
           1     2       3  Class java.lang.Throwable

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter this
         0: .line 524
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/fasterxml/jackson/dataformat/xml/util/DefaultXmlPrettyPrinter$Lf2SpacesIndenter;

  public boolean isInline();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter this
         0: .line 527
            iconst_0
            ireturn
        end local 0 // com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/fasterxml/jackson/dataformat/xml/util/DefaultXmlPrettyPrinter$Lf2SpacesIndenter;

  public void writeIndentation(org.codehaus.stax2.XMLStreamWriter2, int);
    descriptor: (Lorg/codehaus/stax2/XMLStreamWriter2;I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=3, args_size=3
        start local 0 // com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter this
        start local 1 // org.codehaus.stax2.XMLStreamWriter2 sw
        start local 2 // int level
         0: .line 532
            aload 1 /* sw */
            getstatic com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter.SYSTEM_LINE_SEPARATOR:Ljava/lang/String;
            invokeinterface org.codehaus.stax2.XMLStreamWriter2.writeRaw:(Ljava/lang/String;)V
         1: .line 533
            iload 2 /* level */
            iload 2 /* level */
            iadd
            istore 2 /* level */
         2: .line 534
            goto 5
         3: .line 535
      StackMap locals:
      StackMap stack:
            aload 1 /* sw */
            getstatic com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter.SPACES:[C
            iconst_0
            bipush 64
            invokeinterface org.codehaus.stax2.XMLStreamWriter2.writeRaw:([CII)V
         4: .line 536
            iload 2 /* level */
            getstatic com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter.SPACES:[C
            arraylength
            isub
            istore 2 /* level */
         5: .line 534
      StackMap locals:
      StackMap stack:
            iload 2 /* level */
            bipush 64
            if_icmpgt 3
         6: .line 538
            aload 1 /* sw */
            getstatic com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter.SPACES:[C
            iconst_0
            iload 2 /* level */
            invokeinterface org.codehaus.stax2.XMLStreamWriter2.writeRaw:([CII)V
         7: .line 539
            return
        end local 2 // int level
        end local 1 // org.codehaus.stax2.XMLStreamWriter2 sw
        end local 0 // com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    8     0   this  Lcom/fasterxml/jackson/dataformat/xml/util/DefaultXmlPrettyPrinter$Lf2SpacesIndenter;
            0    8     1     sw  Lorg/codehaus/stax2/XMLStreamWriter2;
            0    8     2  level  I
    Exceptions:
      throws javax.xml.stream.XMLStreamException
    MethodParameters:
       Name  Flags
      sw     
      level  

  public void writeIndentation(com.fasterxml.jackson.core.JsonGenerator, int);
    descriptor: (Lcom/fasterxml/jackson/core/JsonGenerator;I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=3, args_size=3
        start local 0 // com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter this
        start local 1 // com.fasterxml.jackson.core.JsonGenerator jg
        start local 2 // int level
         0: .line 544
            aload 1 /* jg */
            getstatic com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter.SYSTEM_LINE_SEPARATOR:Ljava/lang/String;
            invokevirtual com.fasterxml.jackson.core.JsonGenerator.writeRaw:(Ljava/lang/String;)V
         1: .line 545
            iload 2 /* level */
            iload 2 /* level */
            iadd
            istore 2 /* level */
         2: .line 546
            goto 5
         3: .line 547
      StackMap locals:
      StackMap stack:
            aload 1 /* jg */
            getstatic com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter.SPACES:[C
            iconst_0
            bipush 64
            invokevirtual com.fasterxml.jackson.core.JsonGenerator.writeRaw:([CII)V
         4: .line 548
            iload 2 /* level */
            getstatic com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter.SPACES:[C
            arraylength
            isub
            istore 2 /* level */
         5: .line 546
      StackMap locals:
      StackMap stack:
            iload 2 /* level */
            bipush 64
            if_icmpgt 3
         6: .line 550
            aload 1 /* jg */
            getstatic com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter.SPACES:[C
            iconst_0
            iload 2 /* level */
            invokevirtual com.fasterxml.jackson.core.JsonGenerator.writeRaw:([CII)V
         7: .line 551
            return
        end local 2 // int level
        end local 1 // com.fasterxml.jackson.core.JsonGenerator jg
        end local 0 // com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    8     0   this  Lcom/fasterxml/jackson/dataformat/xml/util/DefaultXmlPrettyPrinter$Lf2SpacesIndenter;
            0    8     1     jg  Lcom/fasterxml/jackson/core/JsonGenerator;
            0    8     2  level  I
    Exceptions:
      throws java.io.IOException
    MethodParameters:
       Name  Flags
      jg     
      level  
}
SourceFile: "DefaultXmlPrettyPrinter.java"
NestHost: com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter
InnerClasses:
  public abstract Indenter = com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Indenter of com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter
  protected Lf2SpacesIndenter = com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter of com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter