code: @Bean
      @ConditionalOnMissingBean
      public TelemetryConfiguration telemetryConfiguration(AzureMonitorConfig config) {
          // Gets the active instance of TelemetryConfiguration either created by starter or xml
          final TelemetryConfiguration telemetryConfiguration = TelemetryConfiguration.getActive();
          if (StringUtils.isEmpty(telemetryConfiguration.getInstrumentationKey())) {
              telemetryConfiguration.setInstrumentationKey(config.instrumentationKey());
          }
          return telemetryConfiguration;
      }
docs: This bean is already available when the
  {@see <a href="https://github.com/Microsoft/ApplicationInsights-Java/tree/master/
  azure-application-insights-spring-boot-starter">Azure Application Insights starter</a>}
  is present.