https://github.com/Terracotta-OSS/offheap-store/: A library that offers data structures allocated off the java heap. 
public interface org.terracotta.offheapstore.paging.PageSource
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.terracotta.offheapstore.paging.PageSource
  super_class: java.lang.Object
{
  public abstract org.terracotta.offheapstore.paging.Page allocate(int, boolean, boolean, org.terracotta.offheapstore.paging.OffHeapStorageArea);
    descriptor: (IZZLorg/terracotta/offheapstore/paging/OffHeapStorageArea;)Lorg/terracotta/offheapstore/paging/Page;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
        Name  Flags
      size    
      thief   
      victim  
      owner   

  public abstract void free(org.terracotta.offheapstore.paging.Page);
    descriptor: (Lorg/terracotta/offheapstore/paging/Page;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      page  
}
SourceFile: "PageSource.java"