Warnings fixed.

backend/src/Squidex.Domain.Apps.Core.Operations/ValidateContent/Validators/ObjectValidator.cs

@@ -51,7 +51,7 @@ namespace Squidex.Domain.Apps.Core.ValidateContent.Validators
 
                     var fieldValue = Undefined.Value;
 
-                    if (!values.TryGetValue(fieldName, out var temp))
+                    if (!values.TryGetValue(fieldName, out var nestedValue))
                     {
                         if (isPartial)
                         {
@@ -60,7 +60,7 @@ namespace Squidex.Domain.Apps.Core.ValidateContent.Validators
                     }
                     else
                     {
-                        fieldValue = temp;
+                        fieldValue = nestedValue!;
                     }
 
                     var fieldContext = context.Nested(fieldName).Optional(isOptional);

backend/src/Squidex.Domain.Apps.Entities/Contents/ContentHistoryEventsCreator.cs

@@ -68,7 +68,7 @@ namespace Squidex.Domain.Apps.Entities.Contents
                 result = result.Param("Status", contentStatusScheduled.Status);
             }
 
-            return Task.FromResult(result);
+            return Task.FromResult<HistoryEvent?>(result);
         }
     }
 }

backend/src/Squidex.Domain.Apps.Entities/Rules/ManualTriggerHandler.cs

@@ -23,7 +23,7 @@ namespace Squidex.Domain.Apps.Entities.Rules
                 Name = "Manual"
             };
 
-            return Task.FromResult(result);
+            return Task.FromResult<EnrichedManualEvent?>(result);
         }
 
         protected override bool Trigger(EnrichedManualEvent @event, ManualTrigger trigger)

backend/src/Squidex.Domain.Apps.Entities/Rules/UsageTracking/UsageTriggerHandler.cs

@@ -27,7 +27,7 @@ namespace Squidex.Domain.Apps.Entities.Rules.UsageTracking
                 Name = EventName
             };
 
-            return Task.FromResult(result);
+            return Task.FromResult<EnrichedUsageExceededEvent?>(result);
         }
 
         protected override bool Trigger(EnrichedUsageExceededEvent @event, UsageTrigger trigger)