instance method operations

# File activestorage/lib/active_storage/transformers/image_processing_transformer.rb, line 32
        def operations
          transformations.each_with_object([]) do |(name, argument), list|
            if ActiveStorage.variant_processor == :mini_magick
              validate_transformation(name, argument)
            end

            if name.to_s == "combine_options"
              raise ArgumentError, <<~ERROR.squish
                Active Storage's ImageProcessing transformer doesn't support :combine_options,
                as it always generates a single command.
              ERROR
            end

            if argument.present?
              list << [ name, argument ]
            end
          end
        end