https://logging.apache.org/log4j/2.x/log4j-core/: The Apache Log4j Implementation (The Apache Software Foundation)
  • Ralph Goers (Nextiva)
  • Gary Gregory (Rocket Software)
  • Scott Deboy
  • Remko Popma
  • Nick Williams
  • Matt Sicker (CloudBees)
  • Bruce Brouwer
  • Mikael Ståldal (Spotify)
  • Carter Kozak 
public class org.apache.logging.log4j.core.appender.db.AbstractDatabaseAppender$Builder<B extends org.apache.logging.log4j.core.appender.db.AbstractDatabaseAppender$Builder<B>> extends org.apache.logging.log4j.core.appender.AbstractAppender$Builder<B>
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.apache.logging.log4j.core.appender.db.AbstractDatabaseAppender$Builder
  super_class: org.apache.logging.log4j.core.appender.AbstractAppender$Builder
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.logging.log4j.core.appender.db.AbstractDatabaseAppender$Builder this
         0: .line 43
            aload 0 /* this */
            invokespecial org.apache.logging.log4j.core.appender.AbstractAppender$Builder.<init>:()V
            return
        end local 0 // org.apache.logging.log4j.core.appender.db.AbstractDatabaseAppender$Builder this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/logging/log4j/core/appender/db/AbstractDatabaseAppender$Builder<TB;>;
}
Signature: <B:Lorg/apache/logging/log4j/core/appender/db/AbstractDatabaseAppender$Builder<TB;>;>Lorg/apache/logging/log4j/core/appender/AbstractAppender$Builder<TB;>;
SourceFile: "AbstractDatabaseAppender.java"
NestHost: org.apache.logging.log4j.core.appender.db.AbstractDatabaseAppender
InnerClasses:
  public abstract Builder = org.apache.logging.log4j.core.appender.AbstractAppender$Builder of org.apache.logging.log4j.core.appender.AbstractAppender
  public Builder = org.apache.logging.log4j.core.appender.db.AbstractDatabaseAppender$Builder of org.apache.logging.log4j.core.appender.db.AbstractDatabaseAppender