https://tomcat.apache.org/: Tomcat Servlet Engine Core Classes and Standard implementations 
public interface org.apache.catalina.startup.Catalina$ServerXml
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.apache.catalina.startup.Catalina$ServerXml
  super_class: java.lang.Object
{
  public abstract void load(org.apache.catalina.startup.Catalina);
    descriptor: (Lorg/apache/catalina/startup/Catalina;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
          Name  Flags
      catalina  
}
SourceFile: "Catalina.java"
NestHost: org.apache.catalina.startup.Catalina
InnerClasses:
  public abstract ServerXml = org.apache.catalina.startup.Catalina$ServerXml of org.apache.catalina.startup.Catalina