valueData `typedef`

Data related to a value in a type expression.

`Object`

types {Array<typeData>}:
The allowed types of the value. Multiple types can be specified like:
```
{Boolean|Array}
```
name {String}:
Set if the value is given a name. This property is set by record type expressions like:
```
{{PROPERTY_NAME: TYPE, PROPERTY_NAME: TYPE}}
```
Or by name expressions like:
```
method(arg1, arg2)
```
description {String}:
A description associated with the value. This is commonly provided by the @option or @param tag.
optional {Boolean}:
If the type does not need to exist. This can be specified in the type like:
```
{String=}
```
Or more commonly in a name expression like:
```
[NAME]
```
nullable {Boolean}:
If the type can be null. It is specified with ? like:
```
{?TYPE}
```
nonnull {Boolean}:
If the type can not be null. It is specified with ! like:
```
{!TYPE}
```
variable {Boolean}:
If multiple values of the type can be provided. This can be specified in the type with ... like:
```
{function(...Number)}
```
or:
```
{function(Number...)}
```
defaultValue {typeData}:
The default value of the object if it is not provided. This is commonly specified by a name expression like:
```
[foo="bar"]
```