Namespace Microsoft.ApplicationInsights.DataContracts Classes AvailabilityTelemetry DependencyTelemetry EventTelemetry ExceptionDetailsInfo ExceptionTelemetry MetricTelemetry PageViewPerformanceTelemetry PageViewTelemetry PerformanceCounterTelemetry RequestTelemetry SessionStateTelemetry StackFrame TelemetryContext TraceTelemetry Interfaces IJsonWriter ISupportAdvancedSampling ISupportMetrics ISupportProperties ISupportSampling Enums ExceptionHandledAt SamplingDecision SamplingTelemetryItemTypes SessionState SeverityLevel