https://freemarker.apache.org/: FreeMarker is a "template engine"; a generic tool to generate text output based on templates. (Apache Software Foundation) 
final class freemarker.core.RecurseNode extends freemarker.core.TemplateElement
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: freemarker.core.RecurseNode
  super_class: freemarker.core.TemplateElement
{
  freemarker.core.Expression targetNode;
    descriptor: Lfreemarker/core/Expression;
    flags: (0x0000) 

  freemarker.core.Expression namespaces;
    descriptor: Lfreemarker/core/Expression;
    flags: (0x0000) 

  void <init>(freemarker.core.Expression, freemarker.core.Expression);
    descriptor: (Lfreemarker/core/Expression;Lfreemarker/core/Expression;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // freemarker.core.RecurseNode this
        start local 1 // freemarker.core.Expression targetNode
        start local 2 // freemarker.core.Expression namespaces
         0: .line 40
            aload 0 /* this */
            invokespecial freemarker.core.TemplateElement.<init>:()V
         1: .line 41
            aload 0 /* this */
            aload 1 /* targetNode */
            putfield freemarker.core.RecurseNode.targetNode:Lfreemarker/core/Expression;
         2: .line 42
            aload 0 /* this */
            aload 2 /* namespaces */
            putfield freemarker.core.RecurseNode.namespaces:Lfreemarker/core/Expression;
         3: .line 43
            return
        end local 2 // freemarker.core.Expression namespaces
        end local 1 // freemarker.core.Expression targetNode
        end local 0 // freemarker.core.RecurseNode this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    4     0        this  Lfreemarker/core/RecurseNode;
            0    4     1  targetNode  Lfreemarker/core/Expression;
            0    4     2  namespaces  Lfreemarker/core/Expression;
    MethodParameters:
            Name  Flags
      targetNode  
      namespaces  

  freemarker.core.TemplateElement[] accept(freemarker.core.Environment);
    descriptor: (Lfreemarker/core/Environment;)[Lfreemarker/core/TemplateElement;
    flags: (0x0000) 
    Code:
      stack=6, locals=5, args_size=2
        start local 0 // freemarker.core.RecurseNode this
        start local 1 // freemarker.core.Environment env
         0: .line 47
            aload 0 /* this */
            getfield freemarker.core.RecurseNode.targetNode:Lfreemarker/core/Expression;
            ifnonnull 1
            aconst_null
            goto 2
      StackMap locals:
      StackMap stack:
         1: aload 0 /* this */
            getfield freemarker.core.RecurseNode.targetNode:Lfreemarker/core/Expression;
            aload 1 /* env */
            invokevirtual freemarker.core.Expression.eval:(Lfreemarker/core/Environment;)Lfreemarker/template/TemplateModel;
      StackMap locals:
      StackMap stack: freemarker.template.TemplateModel
         2: astore 2 /* node */
        start local 2 // freemarker.template.TemplateModel node
         3: .line 48
            aload 2 /* node */
            ifnull 5
            aload 2 /* node */
            instanceof freemarker.template.TemplateNodeModel
            ifne 5
         4: .line 49
            new freemarker.core.NonNodeException
            dup
            aload 0 /* this */
            getfield freemarker.core.RecurseNode.targetNode:Lfreemarker/core/Expression;
            aload 2 /* node */
            ldc "node"
            aload 1 /* env */
            invokespecial freemarker.core.NonNodeException.<init>:(Lfreemarker/core/Expression;Lfreemarker/template/TemplateModel;Ljava/lang/String;Lfreemarker/core/Environment;)V
            athrow
         5: .line 52
      StackMap locals: freemarker.template.TemplateModel
      StackMap stack:
            aload 0 /* this */
            getfield freemarker.core.RecurseNode.namespaces:Lfreemarker/core/Expression;
            ifnonnull 6
            aconst_null
            goto 7
      StackMap locals:
      StackMap stack:
         6: aload 0 /* this */
            getfield freemarker.core.RecurseNode.namespaces:Lfreemarker/core/Expression;
            aload 1 /* env */
            invokevirtual freemarker.core.Expression.eval:(Lfreemarker/core/Environment;)Lfreemarker/template/TemplateModel;
      StackMap locals:
      StackMap stack: freemarker.template.TemplateModel
         7: astore 3 /* nss */
        start local 3 // freemarker.template.TemplateModel nss
         8: .line 53
            aload 0 /* this */
            getfield freemarker.core.RecurseNode.namespaces:Lfreemarker/core/Expression;
            instanceof freemarker.core.StringLiteral
            ifeq 11
         9: .line 54
            aload 1 /* env */
            aload 3 /* nss */
            checkcast freemarker.template.TemplateScalarModel
            invokeinterface freemarker.template.TemplateScalarModel.getAsString:()Ljava/lang/String;
            aconst_null
            invokevirtual freemarker.core.Environment.importLib:(Ljava/lang/String;Ljava/lang/String;)Lfreemarker/core/Environment$Namespace;
            astore 3 /* nss */
        10: .line 55
            goto 13
      StackMap locals: freemarker.template.TemplateModel
      StackMap stack:
        11: aload 0 /* this */
            getfield freemarker.core.RecurseNode.namespaces:Lfreemarker/core/Expression;
            instanceof freemarker.core.ListLiteral
            ifeq 13
        12: .line 56
            aload 0 /* this */
            getfield freemarker.core.RecurseNode.namespaces:Lfreemarker/core/Expression;
            checkcast freemarker.core.ListLiteral
            aload 1 /* env */
            invokevirtual freemarker.core.ListLiteral.evaluateStringsToNamespaces:(Lfreemarker/core/Environment;)Lfreemarker/template/TemplateSequenceModel;
            astore 3 /* nss */
        13: .line 58
      StackMap locals:
      StackMap stack:
            aload 3 /* nss */
            ifnull 23
        14: .line 59
            aload 3 /* nss */
            instanceof freemarker.template.TemplateHashModel
            ifeq 19
        15: .line 60
            new freemarker.template.SimpleSequence
            dup
            iconst_1
            invokespecial freemarker.template.SimpleSequence.<init>:(I)V
            astore 4 /* ss */
        start local 4 // freemarker.template.SimpleSequence ss
        16: .line 61
            aload 4 /* ss */
            aload 3 /* nss */
            invokevirtual freemarker.template.SimpleSequence.add:(Ljava/lang/Object;)V
        17: .line 62
            aload 4 /* ss */
            astore 3 /* nss */
        end local 4 // freemarker.template.SimpleSequence ss
        18: .line 63
            goto 23
      StackMap locals:
      StackMap stack:
        19: aload 3 /* nss */
            instanceof freemarker.template.TemplateSequenceModel
            ifne 23
        20: .line 64
            aload 0 /* this */
            getfield freemarker.core.RecurseNode.namespaces:Lfreemarker/core/Expression;
            ifnull 22
        21: .line 65
            new freemarker.core.NonSequenceException
            dup
            aload 0 /* this */
            getfield freemarker.core.RecurseNode.namespaces:Lfreemarker/core/Expression;
            aload 3 /* nss */
            aload 1 /* env */
            invokespecial freemarker.core.NonSequenceException.<init>:(Lfreemarker/core/Expression;Lfreemarker/template/TemplateModel;Lfreemarker/core/Environment;)V
            athrow
        22: .line 68
      StackMap locals:
      StackMap stack:
            new freemarker.core._MiscTemplateException
            dup
            aload 1 /* env */
            ldc "Expecting a sequence of namespaces after \"using\""
            invokespecial freemarker.core._MiscTemplateException.<init>:(Lfreemarker/core/Environment;Ljava/lang/String;)V
            athrow
        23: .line 73
      StackMap locals:
      StackMap stack:
            aload 1 /* env */
            aload 2 /* node */
            checkcast freemarker.template.TemplateNodeModel
            aload 3 /* nss */
            checkcast freemarker.template.TemplateSequenceModel
            invokevirtual freemarker.core.Environment.recurse:(Lfreemarker/template/TemplateNodeModel;Lfreemarker/template/TemplateSequenceModel;)V
        24: .line 74
            aconst_null
            areturn
        end local 3 // freemarker.template.TemplateModel nss
        end local 2 // freemarker.template.TemplateModel node
        end local 1 // freemarker.core.Environment env
        end local 0 // freemarker.core.RecurseNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0   25     0  this  Lfreemarker/core/RecurseNode;
            0   25     1   env  Lfreemarker/core/Environment;
            3   25     2  node  Lfreemarker/template/TemplateModel;
            8   25     3   nss  Lfreemarker/template/TemplateModel;
           16   18     4    ss  Lfreemarker/template/SimpleSequence;
    Exceptions:
      throws java.io.IOException, freemarker.template.TemplateException
    MethodParameters:
      Name  Flags
      env   

  protected java.lang.String dump(boolean);
    descriptor: (Z)Ljava/lang/String;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // freemarker.core.RecurseNode this
        start local 1 // boolean canonical
         0: .line 79
            new java.lang.StringBuilder
            dup
            invokespecial java.lang.StringBuilder.<init>:()V
            astore 2 /* sb */
        start local 2 // java.lang.StringBuilder sb
         1: .line 80
            iload 1 /* canonical */
            ifeq 2
            aload 2 /* sb */
            bipush 60
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            pop
         2: .line 81
      StackMap locals: java.lang.StringBuilder
      StackMap stack:
            aload 2 /* sb */
            aload 0 /* this */
            invokevirtual freemarker.core.RecurseNode.getNodeTypeSymbol:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
         3: .line 82
            aload 0 /* this */
            getfield freemarker.core.RecurseNode.targetNode:Lfreemarker/core/Expression;
            ifnull 6
         4: .line 83
            aload 2 /* sb */
            bipush 32
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            pop
         5: .line 84
            aload 2 /* sb */
            aload 0 /* this */
            getfield freemarker.core.RecurseNode.targetNode:Lfreemarker/core/Expression;
            invokevirtual freemarker.core.Expression.getCanonicalForm:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
         6: .line 86
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield freemarker.core.RecurseNode.namespaces:Lfreemarker/core/Expression;
            ifnull 9
         7: .line 87
            aload 2 /* sb */
            ldc " using "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
         8: .line 88
            aload 2 /* sb */
            aload 0 /* this */
            getfield freemarker.core.RecurseNode.namespaces:Lfreemarker/core/Expression;
            invokevirtual freemarker.core.Expression.getCanonicalForm:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
         9: .line 90
      StackMap locals:
      StackMap stack:
            iload 1 /* canonical */
            ifeq 10
            aload 2 /* sb */
            ldc "/>"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
        10: .line 91
      StackMap locals:
      StackMap stack:
            aload 2 /* sb */
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
        end local 2 // java.lang.StringBuilder sb
        end local 1 // boolean canonical
        end local 0 // freemarker.core.RecurseNode this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   11     0       this  Lfreemarker/core/RecurseNode;
            0   11     1  canonical  Z
            1   11     2         sb  Ljava/lang/StringBuilder;
    MethodParameters:
           Name  Flags
      canonical  

  java.lang.String getNodeTypeSymbol();
    descriptor: ()Ljava/lang/String;
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // freemarker.core.RecurseNode this
         0: .line 96
            ldc "#recurse"
            areturn
        end local 0 // freemarker.core.RecurseNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/core/RecurseNode;

  int getParameterCount();
    descriptor: ()I
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // freemarker.core.RecurseNode this
         0: .line 101
            iconst_2
            ireturn
        end local 0 // freemarker.core.RecurseNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/core/RecurseNode;

  java.lang.Object getParameterValue(int);
    descriptor: (I)Ljava/lang/Object;
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // freemarker.core.RecurseNode this
        start local 1 // int idx
         0: .line 106
            iload 1 /* idx */
            tableswitch { // 0 - 1
                    0: 1
                    1: 2
              default: 3
          }
         1: .line 107
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield freemarker.core.RecurseNode.targetNode:Lfreemarker/core/Expression;
            areturn
         2: .line 108
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield freemarker.core.RecurseNode.namespaces:Lfreemarker/core/Expression;
            areturn
         3: .line 109
      StackMap locals:
      StackMap stack:
            new java.lang.IndexOutOfBoundsException
            dup
            invokespecial java.lang.IndexOutOfBoundsException.<init>:()V
            athrow
        end local 1 // int idx
        end local 0 // freemarker.core.RecurseNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lfreemarker/core/RecurseNode;
            0    4     1   idx  I
    MethodParameters:
      Name  Flags
      idx   

  freemarker.core.ParameterRole getParameterRole(int);
    descriptor: (I)Lfreemarker/core/ParameterRole;
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // freemarker.core.RecurseNode this
        start local 1 // int idx
         0: .line 115
            iload 1 /* idx */
            tableswitch { // 0 - 1
                    0: 1
                    1: 2
              default: 3
          }
         1: .line 116
      StackMap locals:
      StackMap stack:
            getstatic freemarker.core.ParameterRole.NODE:Lfreemarker/core/ParameterRole;
            areturn
         2: .line 117
      StackMap locals:
      StackMap stack:
            getstatic freemarker.core.ParameterRole.NAMESPACE:Lfreemarker/core/ParameterRole;
            areturn
         3: .line 118
      StackMap locals:
      StackMap stack:
            new java.lang.IndexOutOfBoundsException
            dup
            invokespecial java.lang.IndexOutOfBoundsException.<init>:()V
            athrow
        end local 1 // int idx
        end local 0 // freemarker.core.RecurseNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lfreemarker/core/RecurseNode;
            0    4     1   idx  I
    MethodParameters:
      Name  Flags
      idx   

  boolean isNestedBlockRepeater();
    descriptor: ()Z
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // freemarker.core.RecurseNode this
         0: .line 124
            iconst_0
            ireturn
        end local 0 // freemarker.core.RecurseNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/core/RecurseNode;

  boolean isShownInStackTrace();
    descriptor: ()Z
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // freemarker.core.RecurseNode this
         0: .line 129
            iconst_1
            ireturn
        end local 0 // freemarker.core.RecurseNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/core/RecurseNode;
}
SourceFile: "RecurseNode.java"
InnerClasses:
  public Namespace = freemarker.core.Environment$Namespace of freemarker.core.Environment