Checks the ordering/grouping of imports. Features are:
- groups imports: ensures that groups of imports come in a specific order (e.g., java. comes first, javax. comes second, then everything else)
- adds a separation between groups : ensures that a blank line sit between each group
- sorts imports inside each group: ensures that imports within each group are in lexicographic order
- sorts according to case: ensures that the comparison between imports is case sensitive
- groups static imports: ensures the relative order between regular imports and static imports