def get_possible_type(type_name, ctx)
      type = ctx.query.get_type(type_name)
      type if type && ctx.query.schema.possible_types(self).include?(type)
    end
def get_possible_type(type_name, ctx)
      type = ctx.query.get_type(type_name)
      type if type && ctx.query.schema.possible_types(self).include?(type)
    end
Get a possible type of this {UnionType} by type name
 @param type_name [String]
 @param ctx [GraphQL::Query::Context] The context for the current query
 @return [GraphQL::ObjectType, nil] The type named `type_name` if it exists and is a member of this {UnionType}, (else `nil`)