https://github.com/google/guava/guava: Guava is a suite of core and expanded libraries that include utility classes, google's collections, io classes, and much much more. 
public final class com.google.common.html.HtmlEscapers
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: com.google.common.html.HtmlEscapers
  super_class: java.lang.Object
{
  private static final com.google.common.escape.Escaper HTML_ESCAPER;
    descriptor: Lcom/google/common/escape/Escaper;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=3, locals=0, args_size=0
         0: .line 61
            invokestatic com.google.common.escape.Escapers.builder:()Lcom/google/common/escape/Escapers$Builder;
         1: .line 62
            bipush 34
            ldc "&quot;"
            invokevirtual com.google.common.escape.Escapers$Builder.addEscape:(CLjava/lang/String;)Lcom/google/common/escape/Escapers$Builder;
         2: .line 64
            bipush 39
            ldc "&#39;"
            invokevirtual com.google.common.escape.Escapers$Builder.addEscape:(CLjava/lang/String;)Lcom/google/common/escape/Escapers$Builder;
         3: .line 65
            bipush 38
            ldc "&amp;"
            invokevirtual com.google.common.escape.Escapers$Builder.addEscape:(CLjava/lang/String;)Lcom/google/common/escape/Escapers$Builder;
         4: .line 66
            bipush 60
            ldc "&lt;"
            invokevirtual com.google.common.escape.Escapers$Builder.addEscape:(CLjava/lang/String;)Lcom/google/common/escape/Escapers$Builder;
         5: .line 67
            bipush 62
            ldc "&gt;"
            invokevirtual com.google.common.escape.Escapers$Builder.addEscape:(CLjava/lang/String;)Lcom/google/common/escape/Escapers$Builder;
         6: .line 68
            invokevirtual com.google.common.escape.Escapers$Builder.build:()Lcom/google/common/escape/Escaper;
         7: .line 60
            putstatic com.google.common.html.HtmlEscapers.HTML_ESCAPER:Lcom/google/common/escape/Escaper;
         8: .line 68
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public static com.google.common.escape.Escaper htmlEscaper();
    descriptor: ()Lcom/google/common/escape/Escaper;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 54
            getstatic com.google.common.html.HtmlEscapers.HTML_ESCAPER:Lcom/google/common/escape/Escaper;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.common.html.HtmlEscapers this
         0: .line 70
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.google.common.html.HtmlEscapers this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/html/HtmlEscapers;
}
SourceFile: "HtmlEscapers.java"
InnerClasses:
  public final Builder = com.google.common.escape.Escapers$Builder of com.google.common.escape.Escapers
    RuntimeInvisibleAnnotations: 
      com.google.common.annotations.Beta()
      com.google.common.annotations.GwtCompatible()