CategoryInformation constructor Null safety

CategoryInformation(
  1. {Easy? generalKnowledge,
  2. Easy? art,
  3. Easy? entertainment,
  4. Easy? science,
  5. Easy? mythology,
  6. Easy? history,
  7. Easy? sports}
)

Implementation

CategoryInformation(
    {this.generalKnowledge,
      this.art,
      this.entertainment,
      this.science,
      this.mythology,
      this.history,
      this.sports});