/// <summary>
/// Persist this DataFrame with the default storage level (`MEMORY_AND_DISK`)
/// </summary>
// Python API: https://github.com/apache/spark/blob/branch-1.4/python/pyspark/sql/dataframe.py persist(self, storageLevel)
public DataFrame Persist()
{
dataFrameProxy.Persist(StorageLevelType.MEMORY_AND_DISK);
return(this);
}