# File lib/new_relic/agent/commands/thread_profiler_session.rb, line 22
        def handle_start_command(agent_command)
          raise_unsupported_error unless NewRelic::Agent::Threading::BacktraceService.is_supported?
          raise_thread_profiler_disabled unless enabled?
          raise_already_started_error if running?
          start(agent_command)
        end