json.Serializer attributes

Important:

These serializer-specific attributes are supported only by json.Serializer and do not work with util.JSON.

Table 1. JSON attributes
Attribute	Description
`JSONAdditionalProperties = { true \| false }`	Specify a record that can have properties whose names are not listed in the definition.
`JSONOneOf`	Defines a record that must match exactly one of several possible JSON schemas during serialization or deserialization. Used to handle polymorphic JSON structures where multiple schema definitions may apply.
`JSONSelector`	Specify which record member set with JSONOneOf needs to be serialized or deserialized.
`JSONRequired`	Specify properties that are required in a JSON schema.