The name of this type.
Null for GraphQLWrapperType such us GraphQLNonNullType and GraphQLListType. You can use GraphQLType.toString or GraphQLType.printableName if you need a non-null name.
GraphQLWrapperType
GraphQLNonNullType
GraphQLListType
GraphQLType.toString
GraphQLType.printableName
@override String get name => 'Json';