class Paperclip::NilAdapter

def self.register
  Paperclip.io_adapters.register self do |target|
    target.nil? || ((Paperclip::Attachment === target) && !target.present?)
  end
end

def content_type
  ""
end

def eof?
  true
end

def initialize(_target, _options = {}); end

def nil?
  true
end

def original_filename
  ""
end

def read(*_args)
  nil
end

def size
  0
end