• __init__() : nav_speak.NavSpeak , warning.Warning , warning.DiagnosticsSpeakThread
• battery_callback() : warning.Warning
• cmd_vel_callback() : warning.Warning
• diagnostics_status_callback() : warning.Warning
• move_base_goal_callback() : nav_speak.NavSpeak
• move_base_result_callback() : nav_speak.NavSpeak
• robot_state_callback() : warning.Warning
• run() : warning.DiagnosticsSpeakThread
• stop() : warning.DiagnosticsSpeakThread