https://openjdk.java.net/ 
public interface com.sun.source.util.ParameterNameProvider
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.sun.source.util.ParameterNameProvider
  super_class: java.lang.Object
{
  public abstract java.lang.CharSequence getParameterName(javax.lang.model.element.VariableElement);
    descriptor: (Ljavax/lang/model/element/VariableElement;)Ljava/lang/CharSequence;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
           Name  Flags
      parameter  
}
SourceFile: "ParameterNameProvider.java"