• CANONICAL_NAME : tts.amazonpolly.AwsIotCredentialProvider
• DEFAULT_AUTH_CONNECT_TIMEOUT_MS : tts.amazonpolly.AwsIotCredentialProvider
• DEFAULT_AUTH_TOTAL_TIMEOUT_MS : tts.amazonpolly.AwsIotCredentialProvider
• default_output_file_basename : tts.amazonpolly.AmazonPolly
• default_output_folder : tts.amazonpolly.AmazonPolly
• default_output_format : tts.amazonpolly.AmazonPolly , tts.synthesizer.SpeechSynthesizer
• default_text_type : tts.amazonpolly.AmazonPolly , tts.synthesizer.SpeechSynthesizer
• default_voice_id : tts.amazonpolly.AmazonPolly , tts.synthesizer.SpeechSynthesizer
• engine : tts.synthesizer.SpeechSynthesizer
• ENGINES : tts.synthesizer.SpeechSynthesizer
• METHOD : tts.amazonpolly.AwsIotCredentialProvider
• polly : tts.amazonpolly.AmazonPolly
• ros_param_prefix : tts.amazonpolly.AwsIotCredentialProvider
• service_name : tts.synthesizer.SpeechSynthesizer.PollyViaNode