SyntheticDifferenceInDifferences.input_validation# SyntheticDifferenceInDifferences.input_validation(data, treatment_time)[source]# Validate the input data for correctness. Parameters: data (DataFrame) – A dataframe in wide format (columns = units, rows = time periods). treatment_time (int | float | Timestamp) – The time when treatment occurred, should be in reference to the data index. Return type: None