def path_with_prefix(seedname, path)
      if @swift_seedname_prefix
        components = path.split("/")
        prefix = seedname + "_"  # Alamofire_
        filename = components[-1]  # Alamofire.swift
        extension = File.extname(filename)  # .swift

        # only swift files can have prefix in filename
        if extension == '.swift' and not filename.start_with? prefix
          filename = prefix + filename  # Alamofire_Alamofire.swift
          newpath = components[0...-1].join('/') + '/' + filename
          File.rename(path, newpath)  # rename real files
          path = newpath
        end
      end
      path
    end
def path_with_prefix(seedname, path)
      if @swift_seedname_prefix
        components = path.split("/")
        prefix = seedname + "_"  # Alamofire_
        filename = components[-1]  # Alamofire.swift
        extension = File.extname(filename)  # .swift

        # only swift files can have prefix in filename
        if extension == '.swift' and not filename.start_with? prefix
          filename = prefix + filename  # Alamofire_Alamofire.swift
          newpath = components[0...-1].join('/') + '/' + filename
          File.rename(path, newpath)  # rename real files
          path = newpath
        end
      end
      path
    end
Append seed name as a prefix to file name and returns the path.

 @!visibility private