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.utility.DateUtil$CalendarFieldsToDateConverter
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: freemarker.template.utility.DateUtil$CalendarFieldsToDateConverter
  super_class: java.lang.Object
{
  public abstract java.util.Date calculate(int, int, int, int, int, int, int, int, boolean, java.util.TimeZone);
    descriptor: (IIIIIIIIZLjava/util/TimeZone;)Ljava/util/Date;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
           Name  Flags
      era        
      year       
      month      
      day        
      hours      
      minutes    
      secs       
      millisecs  
      addOneDay  
      tz         
}
SourceFile: "DateUtil.java"
NestHost: freemarker.template.utility.DateUtil
InnerClasses:
  public abstract CalendarFieldsToDateConverter = freemarker.template.utility.DateUtil$CalendarFieldsToDateConverter of freemarker.template.utility.DateUtil