how to convert spark dataframe to mleap tensor[double] straightly

Hi : I know how to convert mleap tensor to tensorflow tensor use our package, but I don't know how to make spark dataframe convert to mleap tensor[Double], I have found the method [TypeConverters.sparkToMleapValue()] ,but I don't know how to use,could you support me give a tutorial for this,thanks

Start with TypeConverters.sparkToMleapValue() and the existing MLeap-to-TensorFlow conversion documentation or examples, if available. Determine how a Spark DataFrame should be represented as an MLeap tensor[Double], then document the required usage and a complete example showing the conversion and expected result.

Written by the indexing model from the issue text.