https://tomcat.apache.org/: javax.servlet package 
public interface javax.servlet.FilterChain
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: javax.servlet.FilterChain
  super_class: java.lang.Object
{
  public abstract void doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse);
    descriptor: (Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws java.io.IOException, javax.servlet.ServletException
    MethodParameters:
          Name  Flags
      request   
      response  
}
SourceFile: "FilterChain.java"