https://projects.eclipse.org/projects/ee4j.grizzly/grizzly-framework: Grizzly Bill of Materials (BOM) (Oracle Corporation) 
public interface org.glassfish.grizzly.Appender<E>
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.glassfish.grizzly.Appender
  super_class: java.lang.Object
{
  public abstract E append(E, );
    descriptor: (Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: (TE;TE;)TE;
    MethodParameters:
          Name  Flags
      element1  
      element2  
}
Signature: <E:Ljava/lang/Object;>Ljava/lang/Object;
SourceFile: "Appender.java"