https://freemarker.apache.org/: FreeMarker is a "template engine"; a generic tool to generate text output based on templates. (Apache Software Foundation) 
class freemarker.core.Items extends freemarker.core.TemplateElement
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: freemarker.core.Items
  super_class: freemarker.core.TemplateElement
{
  private final java.lang.String loopVarName;
    descriptor: Ljava/lang/String;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final java.lang.String loopVar2Name;
    descriptor: Ljava/lang/String;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  void <init>(java.lang.String, java.lang.String, freemarker.core.TemplateElements);
    descriptor: (Ljava/lang/String;Ljava/lang/String;Lfreemarker/core/TemplateElements;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=4, args_size=4
        start local 0 // freemarker.core.Items this
        start local 1 // java.lang.String loopVarName
        start local 2 // java.lang.String loopVar2Name
        start local 3 // freemarker.core.TemplateElements children
         0: .line 39
            aload 0 /* this */
            invokespecial freemarker.core.TemplateElement.<init>:()V
         1: .line 40
            aload 0 /* this */
            aload 1 /* loopVarName */
            putfield freemarker.core.Items.loopVarName:Ljava/lang/String;
         2: .line 41
            aload 0 /* this */
            aload 2 /* loopVar2Name */
            putfield freemarker.core.Items.loopVar2Name:Ljava/lang/String;
         3: .line 42
            aload 0 /* this */
            aload 3 /* children */
            invokevirtual freemarker.core.Items.setChildren:(Lfreemarker/core/TemplateElements;)V
         4: .line 43
            return
        end local 3 // freemarker.core.TemplateElements children
        end local 2 // java.lang.String loopVar2Name
        end local 1 // java.lang.String loopVarName
        end local 0 // freemarker.core.Items this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    5     0          this  Lfreemarker/core/Items;
            0    5     1   loopVarName  Ljava/lang/String;
            0    5     2  loopVar2Name  Ljava/lang/String;
            0    5     3      children  Lfreemarker/core/TemplateElements;
    MethodParameters:
              Name  Flags
      loopVarName   
      loopVar2Name  
      children      

  freemarker.core.TemplateElement[] accept(freemarker.core.Environment);
    descriptor: (Lfreemarker/core/Environment;)[Lfreemarker/core/TemplateElement;
    flags: (0x0000) 
    Code:
      stack=7, locals=3, args_size=2
        start local 0 // freemarker.core.Items this
        start local 1 // freemarker.core.Environment env
         0: .line 47
            aload 1 /* env */
            aconst_null
            invokestatic freemarker.core.IteratorBlock.findEnclosingIterationContext:(Lfreemarker/core/Environment;Ljava/lang/String;)Lfreemarker/core/IteratorBlock$IterationContext;
            astore 2 /* iterCtx */
        start local 2 // freemarker.core.IteratorBlock$IterationContext iterCtx
         1: .line 48
            aload 2 /* iterCtx */
            ifnonnull 5
         2: .line 50
            new freemarker.core._MiscTemplateException
            dup
            aload 1 /* env */
            iconst_2
            anewarray java.lang.Object
            dup
            iconst_0
         3: .line 51
            aload 0 /* this */
            invokevirtual freemarker.core.Items.getNodeTypeSymbol:()Ljava/lang/String;
            aastore
            dup
            iconst_1
            ldc " without iteration in context"
         4: .line 50
            aastore
            invokespecial freemarker.core._MiscTemplateException.<init>:(Lfreemarker/core/Environment;[Ljava/lang/Object;)V
            athrow
         5: .line 54
      StackMap locals: freemarker.core.IteratorBlock$IterationContext
      StackMap stack:
            aload 2 /* iterCtx */
            aload 1 /* env */
            aload 0 /* this */
            invokevirtual freemarker.core.Items.getChildBuffer:()[Lfreemarker/core/TemplateElement;
            aload 0 /* this */
            getfield freemarker.core.Items.loopVarName:Ljava/lang/String;
            aload 0 /* this */
            getfield freemarker.core.Items.loopVar2Name:Ljava/lang/String;
            invokevirtual freemarker.core.IteratorBlock$IterationContext.loopForItemsElement:(Lfreemarker/core/Environment;[Lfreemarker/core/TemplateElement;Ljava/lang/String;Ljava/lang/String;)V
         6: .line 55
            aconst_null
            areturn
        end local 2 // freemarker.core.IteratorBlock$IterationContext iterCtx
        end local 1 // freemarker.core.Environment env
        end local 0 // freemarker.core.Items this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    7     0     this  Lfreemarker/core/Items;
            0    7     1      env  Lfreemarker/core/Environment;
            1    7     2  iterCtx  Lfreemarker/core/IteratorBlock$IterationContext;
    Exceptions:
      throws freemarker.template.TemplateException, java.io.IOException
    MethodParameters:
      Name  Flags
      env   

  boolean isNestedBlockRepeater();
    descriptor: ()Z
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // freemarker.core.Items this
         0: .line 60
            iconst_1
            ireturn
        end local 0 // freemarker.core.Items this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/core/Items;

  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.Items this
        start local 1 // boolean canonical
         0: .line 65
            new java.lang.StringBuilder
            dup
            invokespecial java.lang.StringBuilder.<init>:()V
            astore 2 /* sb */
        start local 2 // java.lang.StringBuilder sb
         1: .line 66
            iload 1 /* canonical */
            ifeq 2
            aload 2 /* sb */
            bipush 60
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            pop
         2: .line 67
      StackMap locals: java.lang.StringBuilder
      StackMap stack:
            aload 2 /* sb */
            aload 0 /* this */
            invokevirtual freemarker.core.Items.getNodeTypeSymbol:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
         3: .line 68
            aload 2 /* sb */
            ldc " as "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
         4: .line 69
            aload 2 /* sb */
            aload 0 /* this */
            getfield freemarker.core.Items.loopVarName:Ljava/lang/String;
            invokestatic freemarker.core._CoreStringUtils.toFTLTopLevelIdentifierReference:(Ljava/lang/String;)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
         5: .line 70
            aload 0 /* this */
            getfield freemarker.core.Items.loopVar2Name:Ljava/lang/String;
            ifnull 8
         6: .line 71
            aload 2 /* sb */
            ldc ", "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
         7: .line 72
            aload 2 /* sb */
            aload 0 /* this */
            getfield freemarker.core.Items.loopVar2Name:Ljava/lang/String;
            invokestatic freemarker.core._CoreStringUtils.toFTLTopLevelIdentifierReference:(Ljava/lang/String;)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
         8: .line 74
      StackMap locals:
      StackMap stack:
            iload 1 /* canonical */
            ifeq 14
         9: .line 75
            aload 2 /* sb */
            bipush 62
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            pop
        10: .line 76
            aload 2 /* sb */
            aload 0 /* this */
            invokevirtual freemarker.core.Items.getChildrenCanonicalForm:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
        11: .line 77
            aload 2 /* sb */
            ldc "</"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
        12: .line 78
            aload 2 /* sb */
            aload 0 /* this */
            invokevirtual freemarker.core.Items.getNodeTypeSymbol:()Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            pop
        13: .line 79
            aload 2 /* sb */
            bipush 62
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            pop
        14: .line 81
      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.Items this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   15     0       this  Lfreemarker/core/Items;
            0   15     1  canonical  Z
            1   15     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.Items this
         0: .line 86
            ldc "#items"
            areturn
        end local 0 // freemarker.core.Items this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/core/Items;

  int getParameterCount();
    descriptor: ()I
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // freemarker.core.Items this
         0: .line 91
            aload 0 /* this */
            getfield freemarker.core.Items.loopVar2Name:Ljava/lang/String;
            ifnull 1
            iconst_2
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_1
      StackMap locals:
      StackMap stack: int
         2: ireturn
        end local 0 // freemarker.core.Items this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lfreemarker/core/Items;

  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.Items this
        start local 1 // int idx
         0: .line 96
            iload 1 /* idx */
            tableswitch { // 0 - 1
                    0: 1
                    1: 3
              default: 5
          }
         1: .line 98
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield freemarker.core.Items.loopVarName:Ljava/lang/String;
            ifnonnull 2
            new java.lang.IndexOutOfBoundsException
            dup
            invokespecial java.lang.IndexOutOfBoundsException.<init>:()V
            athrow
         2: .line 99
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield freemarker.core.Items.loopVarName:Ljava/lang/String;
            areturn
         3: .line 101
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield freemarker.core.Items.loopVar2Name:Ljava/lang/String;
            ifnonnull 4
            new java.lang.IndexOutOfBoundsException
            dup
            invokespecial java.lang.IndexOutOfBoundsException.<init>:()V
            athrow
         4: .line 102
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield freemarker.core.Items.loopVar2Name:Ljava/lang/String;
            areturn
         5: .line 103
      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.Items this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lfreemarker/core/Items;
            0    6     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.Items this
        start local 1 // int idx
         0: .line 109
            iload 1 /* idx */
            tableswitch { // 0 - 1
                    0: 1
                    1: 3
              default: 5
          }
         1: .line 111
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield freemarker.core.Items.loopVarName:Ljava/lang/String;
            ifnonnull 2
            new java.lang.IndexOutOfBoundsException
            dup
            invokespecial java.lang.IndexOutOfBoundsException.<init>:()V
            athrow
         2: .line 112
      StackMap locals:
      StackMap stack:
            getstatic freemarker.core.ParameterRole.TARGET_LOOP_VARIABLE:Lfreemarker/core/ParameterRole;
            areturn
         3: .line 114
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield freemarker.core.Items.loopVar2Name:Ljava/lang/String;
            ifnonnull 4
            new java.lang.IndexOutOfBoundsException
            dup
            invokespecial java.lang.IndexOutOfBoundsException.<init>:()V
            athrow
         4: .line 115
      StackMap locals:
      StackMap stack:
            getstatic freemarker.core.ParameterRole.TARGET_LOOP_VARIABLE:Lfreemarker/core/ParameterRole;
            areturn
         5: .line 116
      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.Items this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lfreemarker/core/Items;
            0    6     1   idx  I
    MethodParameters:
      Name  Flags
      idx   
}
SourceFile: "Items.java"
InnerClasses:
  IterationContext = freemarker.core.IteratorBlock$IterationContext of freemarker.core.IteratorBlock