https://openjdk.java.net/ 
public interface sun.net.ftp.FtpDirParser
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: sun.net.ftp.FtpDirParser
  super_class: java.lang.Object
{
  public abstract sun.net.ftp.FtpDirEntry parseLine(java.lang.String);
    descriptor: (Ljava/lang/String;)Lsun/net/ftp/FtpDirEntry;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      line  
}
SourceFile: "FtpDirParser.java"