if ActiveRecord::Migrator.current_version < 20220307083603 # rubocop:disable Style/NumericLiterals
        ActiveRecord::Base.connection.add_index :conversations, ['uri'], name: 'index_conversations_on_uri', unique: true
      else
        ActiveRecord::Base.connection.add_index :conversations, ['uri'], name: 'index_conversations_on_uri', unique: true, where: 'uri IS NOT NULL', opclass: :text_pattern_ops
      end