https://freemarker.apache.org/: FreeMarker is a "template engine"; a generic tool to generate text output based on templates. (Apache Software Foundation) 
public interface freemarker.template.TemplateScalarModel extends freemarker.template.TemplateModel
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: freemarker.template.TemplateScalarModel
  super_class: java.lang.Object
{
  public static final freemarker.template.TemplateModel EMPTY_STRING;
    descriptor: Lfreemarker/template/TemplateModel;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=3, locals=0, args_size=0
         0: .line 37
            new freemarker.template.SimpleScalar
            dup
            ldc ""
            invokespecial freemarker.template.SimpleScalar.<init>:(Ljava/lang/String;)V
            putstatic freemarker.template.TemplateScalarModel.EMPTY_STRING:Lfreemarker/template/TemplateModel;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public abstract java.lang.String getAsString();
    descriptor: ()Ljava/lang/String;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws freemarker.template.TemplateModelException
}
SourceFile: "TemplateScalarModel.java"