json.Serializer attributes

Important:

Most of the attributes in this table apply only to json.Serializer. Attributes that also work with util.JSON, such as json_name and json_null, are identified in their descriptions.

Table 1. JSON attributes
Attribute	Description
`JSONAdditionalProperties = { true \| false }`	Allows a record to accept JSON properties not explicitly listed in its schema definition.
`JSONAllOf`	Combine multiple record schemas into a single type using the JSONAllOf attribute in Genero BDL.
`JSONEnum = '{ "enum-value" } [,...]'`	Defines an explicit, typed list of acceptable values for a field and maps to the `enum` keyword in JSON Schema.
`JSONOneOf`	Defines a record that matches exactly one of several possible JSON schemas during serialization or deserialization.
`JSONSelector`	Identifies the variant member of a JSONOneOf record to use during serialization or deserialization.
`JSONPattern = "pattern"`	Specify a regular expression pattern for string values in a JSON schema.
`JSONRequired`	Specify properties that are required in a JSON schema.
`json_null = {"null" \| "undefined"}`	This attribute controls the representation of null or empty values. `json.Serializer` uses it during both serialization and deserialization, but `util.JSON` applies it only when serializing.
`json_name="JSON element name"`	This attribute maps a BDL variable to a JSON element name that cannot be represented as a valid BDL identifier, including names with spaces or special characters. This attribute is supported by both `json.Serializer` and `util.JSON`.