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$FixedSpaceIndenter implements com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$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$FixedSpaceIndenter
  super_class: java.lang.Object
{
  private static final long serialVersionUID;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  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$FixedSpaceIndenter this
         0: .line 481
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$FixedSpaceIndenter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/fasterxml/jackson/dataformat/xml/util/DefaultXmlPrettyPrinter$FixedSpaceIndenter;

  public void writeIndentation(org.codehaus.stax2.XMLStreamWriter2, int);
    descriptor: (Lorg/codehaus/stax2/XMLStreamWriter2;I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$FixedSpaceIndenter this
        start local 1 // org.codehaus.stax2.XMLStreamWriter2 sw
        start local 2 // int level
         0: .line 487
            aload 1 /* sw */
            ldc " "
            invokeinterface org.codehaus.stax2.XMLStreamWriter2.writeRaw:(Ljava/lang/String;)V
         1: .line 488
            return
        end local 2 // int level
        end local 1 // org.codehaus.stax2.XMLStreamWriter2 sw
        end local 0 // com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$FixedSpaceIndenter this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    2     0   this  Lcom/fasterxml/jackson/dataformat/xml/util/DefaultXmlPrettyPrinter$FixedSpaceIndenter;
            0    2     1     sw  Lorg/codehaus/stax2/XMLStreamWriter2;
            0    2     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=2, locals=3, args_size=3
        start local 0 // com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$FixedSpaceIndenter this
        start local 1 // com.fasterxml.jackson.core.JsonGenerator g
        start local 2 // int level
         0: .line 493
            aload 1 /* g */
            bipush 32
            invokevirtual com.fasterxml.jackson.core.JsonGenerator.writeRaw:(C)V
         1: .line 494
            return
        end local 2 // int level
        end local 1 // com.fasterxml.jackson.core.JsonGenerator g
        end local 0 // com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$FixedSpaceIndenter this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    2     0   this  Lcom/fasterxml/jackson/dataformat/xml/util/DefaultXmlPrettyPrinter$FixedSpaceIndenter;
            0    2     1      g  Lcom/fasterxml/jackson/core/JsonGenerator;
            0    2     2  level  I
    Exceptions:
      throws java.io.IOException
    MethodParameters:
       Name  Flags
      g      
      level  

  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$FixedSpaceIndenter this
         0: .line 497
            iconst_1
            ireturn
        end local 0 // com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$FixedSpaceIndenter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/fasterxml/jackson/dataformat/xml/util/DefaultXmlPrettyPrinter$FixedSpaceIndenter;
}
SourceFile: "DefaultXmlPrettyPrinter.java"
NestHost: com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter
InnerClasses:
  protected FixedSpaceIndenter = com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$FixedSpaceIndenter of com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter
  public abstract Indenter = com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Indenter of com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter