startSpan
abstract fun startSpan(name: String, parent: EmbraceSpan? = null, startTimeMs: Long? = null, autoTerminationMode: AutoTerminationMode = AutoTerminationMode.NONE): EmbraceSpan?(source)
Create, start, and return a new EmbraceSpan with the given name, parent, and start time (epoch time in milliseconds). Returns null if the EmbraceSpan cannot be created or started, like if the parent has been started.