https://github.com/javaee/jpa-spec: Java(TM) Persistence API 
public interface javax.persistence.PersistenceUtil
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: javax.persistence.PersistenceUtil
  super_class: java.lang.Object
{
  public abstract boolean isLoaded(java.lang.Object, java.lang.String);
    descriptor: (Ljava/lang/Object;Ljava/lang/String;)Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
               Name  Flags
      entity         
      attributeName  

  public abstract boolean isLoaded(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
        Name  Flags
      entity  
}
SourceFile: "PersistenceUtil.java"