instance method cached?

# File activerecord/lib/active_record/connection_adapters/schema_cache.rb, line 79
      def cached?(table_name)
        if @cache.nil?
          # If `check_schema_cache_dump_version` is enabled we can't load
          # the schema cache dump without connecting to the database.
          unless self.class.check_schema_cache_dump_version
            @cache = load_cache(nil)
          end
        end

        @cache&.cached?(table_name)
      end