Schema constructor
      const
      Schema({ 
    
- String? rootQueryType,
- String? rootMutationType,
- required InputObjectTypes inputObjectTypes,
- required OutputObjectTypes outputObjectTypes,
- required EnumTypes enumTypes,
Create a new schema.
Implementation
const Schema({
  this.rootQueryType,
  this.rootMutationType,
  required this.inputObjectTypes,
  required this.outputObjectTypes,
  required this.enumTypes,
});