| check_some_missing | Check if some missing values are present | 
| fill_col_with_agg_by_group | Fill column with aggregate by group | 
| fill_df_with_agg_by_group | Fill with aggregate by group | 
| fill_missing | Fill missing | 
| fill_missing_interval | Fill missing interval | 
| fill_missing_last | Fill missing last | 
| fill_missing_max | Fill missing maximum | 
| fill_missing_min | Fill missing minimum | 
| fill_missing_previous | Fill missing previous | 
| fill_missing_rownumber | Fill missing rownumber | 
| fill_missing_strict | Fill missing strict | 
| fill_value | fill missing value | 
| fill_vector_interval | fill_vector_interval | 
| fill_vector_last | fill_vector_last | 
| fill_vector_max | fill_vector_max | 
| fill_vector_min | fill_vector_min | 
| fill_vector_previous | fill_vector_previous | 
| fill_vector_strict | fill_vector_strict | 
| na_impute_median | NA impute median |