https://openjdk.java.net/ 
public interface jdk.internal.org.jline.reader.Expander
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: jdk.internal.org.jline.reader.Expander
  super_class: java.lang.Object
{
  public abstract java.lang.String expandHistory(jdk.internal.org.jline.reader.History, java.lang.String);
    descriptor: (Ljdk/internal/org/jline/reader/History;Ljava/lang/String;)Ljava/lang/String;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
         Name  Flags
      history  
      line     

  public abstract java.lang.String expandVar(java.lang.String);
    descriptor: (Ljava/lang/String;)Ljava/lang/String;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      word  
}
SourceFile: "Expander.java"