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.ObjectWrapper
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: freemarker.template.ObjectWrapper
  super_class: java.lang.Object
{
  public static final freemarker.template.ObjectWrapper BEANS_WRAPPER;
    descriptor: Lfreemarker/template/ObjectWrapper;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    RuntimeVisibleAnnotations: 
      java.lang.Deprecated()

  public static final freemarker.template.ObjectWrapper DEFAULT_WRAPPER;
    descriptor: Lfreemarker/template/ObjectWrapper;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    RuntimeVisibleAnnotations: 
      java.lang.Deprecated()

  public static final freemarker.template.ObjectWrapper SIMPLE_WRAPPER;
    descriptor: Lfreemarker/template/ObjectWrapper;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    RuntimeVisibleAnnotations: 
      java.lang.Deprecated()

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=3, locals=0, args_size=0
         0: .line 25
            new java.lang.Error
            dup
            ldc "Unresolved compilation problems: \n\tThe import edu cannot be resolved\n\tSuppressFBWarnings cannot be resolved to a type\n"
            invokespecial java.lang.Error.<init>:(Ljava/lang/String;)V
            athrow
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public abstract freemarker.template.TemplateModel wrap(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Lfreemarker/template/TemplateModel;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws freemarker.template.TemplateModelException
    MethodParameters:
      Name  Flags
      obj   
}
SourceFile: "ObjectWrapper.java"
    RuntimeInvisibleAnnotations: 
      SuppressFBWarnings()