title: how to handle multiple records in graphql django update mutation
body: <p>The below method updates single emp record , how to handle the same for multiple emp recs at the same time.</p>
  <pre><code>{
  (id : 1, firstName : &quot;John&quot;, lastName: &quot;Snow&quot;),
  (id : 2, firstName : &quot;Tryrion&quot;, lastName: &quot;Lannister&quot;)
  (id : 3, firstName : &quot;Jammie&quot;, lastName: &quot;Lannister&quot;)
  }
  </code></pre>
  <p>I am new to django and graphql kindly help me with code and query for the same</p>
  <pre><code>class UpdateEmp(graphene.Mutation):
      emp = graphene.Field(EmployeeType)
  
  class Arguments:
      id = graphene.Int(required=True)
      first_name = graphene.String()
      last_name = graphene.String()
  
  @login_required
  def mutate(self, info,**kwargs):
      emp = Employee.objects.get(id=kwargs.get('id'))
      emp.first_name=kwargs.get('first_name')
      emp.last_name=kwargs.get('last_name')
      emp.save()
      return UpdateEmp(emp=emp)
  </code></pre>
  <p>graphql</p>
  <pre><code>mutation{
    uopdatemp(id : 1, firstName : &quot;john&quot;, lastName: &quot;Snow&quot;)
    {
      Employee{
        id
        firstName,
        lastName
      }
      
    }
  
  }
    
  </code></pre>