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.template.TrueTemplateBooleanModel implements freemarker.template.SerializableTemplateBooleanModel
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: freemarker.template.TrueTemplateBooleanModel
  super_class: java.lang.Object
{
  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // freemarker.template.TrueTemplateBooleanModel this
         0: .line 25
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // freemarker.template.TrueTemplateBooleanModel this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/template/TrueTemplateBooleanModel;

  public boolean getAsBoolean();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // freemarker.template.TrueTemplateBooleanModel this
         0: .line 28
            iconst_1
            ireturn
        end local 0 // freemarker.template.TrueTemplateBooleanModel this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/template/TrueTemplateBooleanModel;

  private java.lang.Object readResolve();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // freemarker.template.TrueTemplateBooleanModel this
         0: .line 32
            getstatic freemarker.template.TrueTemplateBooleanModel.TRUE:Lfreemarker/template/TemplateBooleanModel;
            areturn
        end local 0 // freemarker.template.TrueTemplateBooleanModel this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/template/TrueTemplateBooleanModel;
}
SourceFile: "TrueTemplateBooleanModel.java"