    # File lib/fog/google/requests/storage/copy_object.rb, line 28
            def copy_object(source_bucket_name, source_object_name, target_bucket_name, target_object_name, options = {})
              headers = { 'x-goog-copy-source' => "/#{source_bucket_name}/#{source_object_name}" }.merge!(options)
              request({
                :expects  => 200,
                :headers  => headers,
                :host     => "#{target_bucket_name}.#{@host}",
                :method   => 'PUT',
                :parser   => Fog::Parsers::Storage::Google::CopyObject.new,
                :path     => CGI.escape(target_object_name)
              })
            end