https://www.graalvm.org/ 
public interface com.oracle.truffle.api.object.LayoutFactory
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.oracle.truffle.api.object.LayoutFactory
  super_class: java.lang.Object
{
  public abstract com.oracle.truffle.api.object.Layout createLayout(com.oracle.truffle.api.object.Layout$Builder);
    descriptor: (Lcom/oracle/truffle/api/object/Layout$Builder;)Lcom/oracle/truffle/api/object/Layout;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
               Name  Flags
      layoutBuilder  

  public abstract com.oracle.truffle.api.object.Property createProperty(java.lang.Object, com.oracle.truffle.api.object.Location);
    descriptor: (Ljava/lang/Object;Lcom/oracle/truffle/api/object/Location;)Lcom/oracle/truffle/api/object/Property;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
          Name  Flags
      id        
      location  

  public abstract com.oracle.truffle.api.object.Property createProperty(java.lang.Object, com.oracle.truffle.api.object.Location, int);
    descriptor: (Ljava/lang/Object;Lcom/oracle/truffle/api/object/Location;I)Lcom/oracle/truffle/api/object/Property;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
          Name  Flags
      id        
      location  
      flags     

  public abstract int getPriority();
    descriptor: ()I
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "LayoutFactory.java"
InnerClasses:
  public final Builder = com.oracle.truffle.api.object.Layout$Builder of com.oracle.truffle.api.object.Layout