http://ehcache.org: The API module of Ehcache 3 (Terracotta Inc., a wholly-owned subsidiary of Software AG USA, Inc.) 
public interface org.ehcache.spi.persistence.PersistableResourceService$PersistenceSpaceIdentifier<T extends org.ehcache.spi.persistence.PersistableResourceService> extends org.ehcache.spi.service.ServiceConfiguration<T, java.lang.Void>
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.ehcache.spi.persistence.PersistableResourceService$PersistenceSpaceIdentifier
  super_class: java.lang.Object
{
}
Signature: <T::Lorg/ehcache/spi/persistence/PersistableResourceService;>Ljava/lang/Object;Lorg/ehcache/spi/service/ServiceConfiguration<TT;Ljava/lang/Void;>;
SourceFile: "PersistableResourceService.java"
NestHost: org.ehcache.spi.persistence.PersistableResourceService
InnerClasses:
  public abstract PersistenceSpaceIdentifier = org.ehcache.spi.persistence.PersistableResourceService$PersistenceSpaceIdentifier of org.ehcache.spi.persistence.PersistableResourceService