https://freemarker.apache.org/: FreeMarker is a "template engine"; a generic tool to generate text output based on templates. (Apache Software Foundation) 
interface freemarker.ext.beans.OverloadedNumberUtil$FloatSource
  minor version: 0
  major version: 59
  flags: flags: (0x0600) ACC_INTERFACE, ACC_ABSTRACT
  this_class: freemarker.ext.beans.OverloadedNumberUtil$FloatSource
  super_class: java.lang.Object
{
  public abstract java.lang.Float floatValue();
    descriptor: ()Ljava/lang/Float;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "OverloadedNumberUtil.java"
NestHost: freemarker.ext.beans.OverloadedNumberUtil
InnerClasses:
  abstract FloatSource = freemarker.ext.beans.OverloadedNumberUtil$FloatSource of freemarker.ext.beans.OverloadedNumberUtil