https://freemarker.apache.org/: FreeMarker is a "template engine"; a generic tool to generate text output based on templates. (Apache Software Foundation) 
abstract class freemarker.core._ObjectBuilderSettingEvaluator$SettingExpression
  minor version: 0
  major version: 59
  flags: flags: (0x0420) ACC_SUPER, ACC_ABSTRACT
  this_class: freemarker.core._ObjectBuilderSettingEvaluator$SettingExpression
  super_class: java.lang.Object
{
  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // freemarker.core._ObjectBuilderSettingEvaluator$SettingExpression this
         0: .line 782
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // freemarker.core._ObjectBuilderSettingEvaluator$SettingExpression this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/core/_ObjectBuilderSettingEvaluator$SettingExpression;

  abstract java.lang.Object eval();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0400) ACC_ABSTRACT
    Exceptions:
      throws freemarker.core._ObjectBuilderSettingEvaluationException
}
SourceFile: "_ObjectBuilderSettingEvaluator.java"
NestHost: freemarker.core._ObjectBuilderSettingEvaluator
InnerClasses:
  private abstract SettingExpression = freemarker.core._ObjectBuilderSettingEvaluator$SettingExpression of freemarker.core._ObjectBuilderSettingEvaluator