com.amazonaws.services.sagemaker.sparksdk.transformation
CSV format Content-Type Header
JSON format Content-Type Header
Hosting Service API Design: AWSALGO-556
LibSVM format Content-Type Header
LibSVM format Content-Type Header
http://www.csie.ntu.edu.tw/~cjlin/libsvm/faq.html
SageMaker Transformation Content-Type HTTP Header Constants