https://eclipse.org/jetty/jetty-server: The core jetty server artifact. (Webtide) 
public interface org.eclipse.jetty.server.RequestLog$Writer
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.eclipse.jetty.server.RequestLog$Writer
  super_class: java.lang.Object
{
  public abstract void write(java.lang.String);
    descriptor: (Ljava/lang/String;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws java.io.IOException
    MethodParameters:
              Name  Flags
      requestEntry  
}
SourceFile: "RequestLog.java"
NestHost: org.eclipse.jetty.server.RequestLog
InnerClasses:
  public abstract Writer = org.eclipse.jetty.server.RequestLog$Writer of org.eclipse.jetty.server.RequestLog