migrate(migrations_paths, target_version = nil, &block) public

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# File activerecord/lib/active_record/migration.rb, line 548
      def migrate(migrations_paths, target_version = nil, &block)
        case
          when target_version.nil?
            up(migrations_paths, target_version, &block)
          when current_version == 0 && target_version == 0
            []
          when current_version > target_version
            down(migrations_paths, target_version, &block)
          else
            up(migrations_paths, target_version, &block)
        end
      end
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