pdftoppm_exists?

# File activestorage/lib/active_storage/previewer/poppler_pdf_previewer.rb, line 14
      def pdftoppm_exists?
        return @pdftoppm_exists if defined?(@pdftoppm_exists)

        @pdftoppm_exists = system(pdftoppm_path, "-v", out: File::NULL, err: File::NULL)
      end