ClassesDataFrameDialogHelperOn this pageClass: DataFrameDialogHelperdg.DataFrameDialogHelperConstructorsconstructor• new DataFrameDialogHelper(df)ParametersNameTypedfDataFrameDefined insrc/dataframe.ts:2273Propertiesdf• Private Readonly df: DataFrameDefined insrc/dataframe.ts:2272MethodsaddNewColumn▸ addNewColumn(): Promise<void>ReturnsPromise<void>Defined insrc/dataframe.ts:2277