https://openjdk.java.net/ 
public interface com.sun.org.apache.xerces.internal.util.MessageFormatter
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.sun.org.apache.xerces.internal.util.MessageFormatter
  super_class: java.lang.Object
{
  public abstract java.lang.String formatMessage(java.util.Locale, java.lang.String, java.lang.Object[]);
    descriptor: (Ljava/util/Locale;Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/String;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws java.util.MissingResourceException
    MethodParameters:
           Name  Flags
      locale     
      key        
      arguments  
}
SourceFile: "MessageFormatter.java"