The following conventions have been applied:
* Import order: static packages -> other packages -> ARSnova packages
  Rule: (imports) CustomImportOrder
* New line between import package groups
  Rule: (imports) CustomImportOrder
* All packages are imported explicitly (no wildcard imports)
  Rule: (imports) AvoidStarImport
* New line between license comment and package line
  Rule: (whitespace) EmptyLineSeparator