add_results             Add validation results to the Report object
data_validation_report
                        Create new validator object
get_results             Get validation results
render_raw_report_ui    Render simple version of report
render_semantic_report_ui
                        Render semantic version of report
save_report             Saving results as a HTML report
save_results            Saving results table to external file
save_summary            Save simple validation summary in text file
validate                Prepare data for validation chain
validate_cols           Validation on columns
validate_if             Verify if expression regarding data is TRUE
validate_rows           Validation on rows
