# File lib/mongo/auth/user/view.rb, line 103
        def update(user_or_name, options = {})
          client.send(:with_session, options) do |session|
            user = generate(user_or_name, options)
            Operation::UpdateUser.new(
              user: user,
              db_name: database.name,
              session: session
            ).execute(next_primary)
          end
        end