https://tomcat.apache.org/: Tomcat Servlet Engine Core Classes and Standard implementations 
public interface org.apache.catalina.Cluster extends org.apache.catalina.Contained
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.apache.catalina.Cluster
  super_class: java.lang.Object
{
  public abstract java.lang.String getClusterName();
    descriptor: ()Ljava/lang/String;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract void setClusterName(java.lang.String);
    descriptor: (Ljava/lang/String;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
             Name  Flags
      clusterName  

  public abstract org.apache.catalina.Manager createManager(java.lang.String);
    descriptor: (Ljava/lang/String;)Lorg/apache/catalina/Manager;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      name  

  public abstract void registerManager(org.apache.catalina.Manager);
    descriptor: (Lorg/apache/catalina/Manager;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
         Name  Flags
      manager  

  public abstract void removeManager(org.apache.catalina.Manager);
    descriptor: (Lorg/apache/catalina/Manager;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
         Name  Flags
      manager  

  public abstract void backgroundProcess();
    descriptor: ()V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "Cluster.java"