https://jsoup.org/: jsoup is a Java library for working with real-world HTML. It provides a very convenient API for extracting and manipulating data, using the best of DOM, CSS, and jquery-like methods. jsoup implements the WHATWG HTML5 specification, and parses HTML to the same DOM as modern browsers do. (Jonathan Hedley)
  • Jonathan Hedley 
abstract class org.jsoup.select.StructuralEvaluator extends org.jsoup.select.Evaluator
  minor version: 0
  major version: 59
  flags: flags: (0x0420) ACC_SUPER, ACC_ABSTRACT
  this_class: org.jsoup.select.StructuralEvaluator
  super_class: org.jsoup.select.Evaluator
{
  org.jsoup.select.Evaluator evaluator;
    descriptor: Lorg/jsoup/select/Evaluator;
    flags: (0x0000) 

  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.jsoup.select.StructuralEvaluator this
         0: .line 8
            aload 0 /* this */
            invokespecial org.jsoup.select.Evaluator.<init>:()V
            return
        end local 0 // org.jsoup.select.StructuralEvaluator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/jsoup/select/StructuralEvaluator;
}
SourceFile: "StructuralEvaluator.java"
NestMembers:
  org.jsoup.select.StructuralEvaluator$Has  org.jsoup.select.StructuralEvaluator$ImmediateParent  org.jsoup.select.StructuralEvaluator$ImmediatePreviousSibling  org.jsoup.select.StructuralEvaluator$Not  org.jsoup.select.StructuralEvaluator$Parent  org.jsoup.select.StructuralEvaluator$PreviousSibling  org.jsoup.select.StructuralEvaluator$Root
InnerClasses:
  Has = org.jsoup.select.StructuralEvaluator$Has of org.jsoup.select.StructuralEvaluator
  ImmediateParent = org.jsoup.select.StructuralEvaluator$ImmediateParent of org.jsoup.select.StructuralEvaluator
  ImmediatePreviousSibling = org.jsoup.select.StructuralEvaluator$ImmediatePreviousSibling of org.jsoup.select.StructuralEvaluator
  Not = org.jsoup.select.StructuralEvaluator$Not of org.jsoup.select.StructuralEvaluator
  Parent = org.jsoup.select.StructuralEvaluator$Parent of org.jsoup.select.StructuralEvaluator
  PreviousSibling = org.jsoup.select.StructuralEvaluator$PreviousSibling of org.jsoup.select.StructuralEvaluator
  Root = org.jsoup.select.StructuralEvaluator$Root of org.jsoup.select.StructuralEvaluator