Specifies an attribute or element value as a key (unique, non-nullable and always present) within the containing element in an instance document. See more info at http://www.w3.org/TR/xmlschema11-1/#element-key.
| Property Name | Description | Possible Value |
|---|---|---|
| Name | The key name. Always required. | Any NCName. |
| ID | The component id. | Any ID. |
| Component | The edited component name. | Not editable property. |
| Namespace | The component namespace. | Not editable property. |
| System ID | The component system id. | Not editable property. |
