class_for_adapter

# File activerecord/lib/active_record/tasks/database_tasks.rb, line 490
        def class_for_adapter(adapter)
          _key, task = @tasks.each_pair.detect { |pattern, _task| adapter[pattern] }
          unless task
            raise DatabaseNotSupported, "Rake tasks not supported by '#{adapter}' adapter"
          end
          task.is_a?(String) ? task.constantize : task
        end