Enables custom instrumentation by providing an SDK to capture start and end times for your functions and include arbitrary data. While AppOptics provides superior out-of-the-box performance monitoring, using the SDK can allow for more detailed transaction reporting within AppOptics's user interface. For other information on our Java agent please visit http://docs.appoptics.com/kb/apm_tracing/java/. For SDK information please visit http://docs.appoptics.com/kb/apm_tracing/java/sdk/ .