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.MixedContent extends freemarker.core.TemplateElement
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: freemarker.core.MixedContent
  super_class: freemarker.core.TemplateElement
{
  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // freemarker.core.MixedContent this
         0: .line 31
            aload 0 /* this */
            invokespecial freemarker.core.TemplateElement.<init>:()V
            return
        end local 0 // freemarker.core.MixedContent this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/core/MixedContent;

  void addElement(freemarker.core.TemplateElement);
    descriptor: (Lfreemarker/core/TemplateElement;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // freemarker.core.MixedContent this
        start local 1 // freemarker.core.TemplateElement element
         0: .line 38
            aload 0 /* this */
            aload 1 /* element */
            invokevirtual freemarker.core.MixedContent.addChild:(Lfreemarker/core/TemplateElement;)V
         1: .line 39
            return
        end local 1 // freemarker.core.TemplateElement element
        end local 0 // freemarker.core.MixedContent this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    2     0     this  Lfreemarker/core/MixedContent;
            0    2     1  element  Lfreemarker/core/TemplateElement;
    RuntimeVisibleAnnotations: 
      java.lang.Deprecated()
    MethodParameters:
         Name  Flags
      element  

  void addElement(int, freemarker.core.TemplateElement);
    descriptor: (ILfreemarker/core/TemplateElement;)V
    flags: (0x0000) 
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // freemarker.core.MixedContent this
        start local 1 // int index
        start local 2 // freemarker.core.TemplateElement element
         0: .line 46
            aload 0 /* this */
            iload 1 /* index */
            aload 2 /* element */
            invokevirtual freemarker.core.MixedContent.addChild:(ILfreemarker/core/TemplateElement;)V
         1: .line 47
            return
        end local 2 // freemarker.core.TemplateElement element
        end local 1 // int index
        end local 0 // freemarker.core.MixedContent this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    2     0     this  Lfreemarker/core/MixedContent;
            0    2     1    index  I
            0    2     2  element  Lfreemarker/core/TemplateElement;
    RuntimeVisibleAnnotations: 
      java.lang.Deprecated()
    MethodParameters:
         Name  Flags
      index    
      element  

  freemarker.core.TemplateElement postParseCleanup(boolean);
    descriptor: (Z)Lfreemarker/core/TemplateElement;
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // freemarker.core.MixedContent this
        start local 1 // boolean stripWhitespace
         0: .line 52
            aload 0 /* this */
            iload 1 /* stripWhitespace */
            invokespecial freemarker.core.TemplateElement.postParseCleanup:(Z)Lfreemarker/core/TemplateElement;
            pop
         1: .line 53
            aload 0 /* this */
            invokevirtual freemarker.core.MixedContent.getChildCount:()I
            iconst_1
            if_icmpne 2
            aload 0 /* this */
            iconst_0
            invokevirtual freemarker.core.MixedContent.getChild:(I)Lfreemarker/core/TemplateElement;
            goto 3
      StackMap locals:
      StackMap stack:
         2: aload 0 /* this */
      StackMap locals:
      StackMap stack: freemarker.core.TemplateElement
         3: areturn
        end local 1 // boolean stripWhitespace
        end local 0 // freemarker.core.MixedContent this
      LocalVariableTable:
        Start  End  Slot             Name  Signature
            0    4     0             this  Lfreemarker/core/MixedContent;
            0    4     1  stripWhitespace  Z
    Exceptions:
      throws freemarker.core.ParseException
    MethodParameters:
                 Name  Flags
      stripWhitespace  

  freemarker.core.TemplateElement[] accept(freemarker.core.Environment);
    descriptor: (Lfreemarker/core/Environment;)[Lfreemarker/core/TemplateElement;
    flags: (0x0000) 
    Code:
      stack=1, locals=2, args_size=2
        start local 0 // freemarker.core.MixedContent this
        start local 1 // freemarker.core.Environment env
         0: .line 63
            aload 0 /* this */
            invokevirtual freemarker.core.MixedContent.getChildBuffer:()[Lfreemarker/core/TemplateElement;
            areturn
        end local 1 // freemarker.core.Environment env
        end local 0 // freemarker.core.MixedContent this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/core/MixedContent;
            0    1     1   env  Lfreemarker/core/Environment;
    Exceptions:
      throws freemarker.template.TemplateException, java.io.IOException
    MethodParameters:
      Name  Flags
      env   

  protected java.lang.String dump(boolean);
    descriptor: (Z)Ljava/lang/String;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=2, args_size=2
        start local 0 // freemarker.core.MixedContent this
        start local 1 // boolean canonical
         0: .line 68
            iload 1 /* canonical */
            ifeq 2
         1: .line 69
            aload 0 /* this */
            invokevirtual freemarker.core.MixedContent.getChildrenCanonicalForm:()Ljava/lang/String;
            areturn
         2: .line 71
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            invokevirtual freemarker.core.MixedContent.getParentElement:()Lfreemarker/core/TemplateElement;
            ifnonnull 4
         3: .line 72
            ldc "root"
            areturn
         4: .line 74
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            invokevirtual freemarker.core.MixedContent.getNodeTypeSymbol:()Ljava/lang/String;
            areturn
        end local 1 // boolean canonical
        end local 0 // freemarker.core.MixedContent this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    5     0       this  Lfreemarker/core/MixedContent;
            0    5     1  canonical  Z
    MethodParameters:
           Name  Flags
      canonical  

  protected boolean isOutputCacheable();
    descriptor: ()Z
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=3, args_size=1
        start local 0 // freemarker.core.MixedContent this
         0: .line 80
            aload 0 /* this */
            invokevirtual freemarker.core.MixedContent.getChildCount:()I
            istore 1 /* ln */
        start local 1 // int ln
         1: .line 81
            iconst_0
            istore 2 /* i */
        start local 2 // int i
         2: goto 6
         3: .line 82
      StackMap locals: int int
      StackMap stack:
            aload 0 /* this */
            iload 2 /* i */
            invokevirtual freemarker.core.MixedContent.getChild:(I)Lfreemarker/core/TemplateElement;
            invokevirtual freemarker.core.TemplateElement.isOutputCacheable:()Z
            ifne 5
         4: .line 83
            iconst_0
            ireturn
         5: .line 81
      StackMap locals:
      StackMap stack:
            iinc 2 /* i */ 1
      StackMap locals:
      StackMap stack:
         6: iload 2 /* i */
            iload 1 /* ln */
            if_icmplt 3
        end local 2 // int i
         7: .line 86
            iconst_1
            ireturn
        end local 1 // int ln
        end local 0 // freemarker.core.MixedContent this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    8     0  this  Lfreemarker/core/MixedContent;
            1    8     1    ln  I
            2    7     2     i  I

  java.lang.String getNodeTypeSymbol();
    descriptor: ()Ljava/lang/String;
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // freemarker.core.MixedContent this
         0: .line 91
            ldc "#mixed_content"
            areturn
        end local 0 // freemarker.core.MixedContent this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/core/MixedContent;

  int getParameterCount();
    descriptor: ()I
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // freemarker.core.MixedContent this
         0: .line 96
            iconst_0
            ireturn
        end local 0 // freemarker.core.MixedContent this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/core/MixedContent;

  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.MixedContent this
        start local 1 // int idx
         0: .line 101
            new java.lang.IndexOutOfBoundsException
            dup
            invokespecial java.lang.IndexOutOfBoundsException.<init>:()V
            athrow
        end local 1 // int idx
        end local 0 // freemarker.core.MixedContent this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/core/MixedContent;
            0    1     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.MixedContent this
        start local 1 // int idx
         0: .line 106
            new java.lang.IndexOutOfBoundsException
            dup
            invokespecial java.lang.IndexOutOfBoundsException.<init>:()V
            athrow
        end local 1 // int idx
        end local 0 // freemarker.core.MixedContent this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/core/MixedContent;
            0    1     1   idx  I
    MethodParameters:
      Name  Flags
      idx   

  boolean isIgnorable(boolean);
    descriptor: (Z)Z
    flags: (0x0000) 
    Code:
      stack=1, locals=2, args_size=2
        start local 0 // freemarker.core.MixedContent this
        start local 1 // boolean stripWhitespace
         0: .line 111
            aload 0 /* this */
            invokevirtual freemarker.core.MixedContent.getChildCount:()I
            ifne 1
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
        end local 1 // boolean stripWhitespace
        end local 0 // freemarker.core.MixedContent this
      LocalVariableTable:
        Start  End  Slot             Name  Signature
            0    2     0             this  Lfreemarker/core/MixedContent;
            0    2     1  stripWhitespace  Z
    MethodParameters:
                 Name  Flags
      stripWhitespace  

  boolean isNestedBlockRepeater();
    descriptor: ()Z
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // freemarker.core.MixedContent this
         0: .line 116
            iconst_0
            ireturn
        end local 0 // freemarker.core.MixedContent this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/core/MixedContent;
}
SourceFile: "MixedContent.java"