ARAS REST API - How do I get properties of a RelationshipType

The Properties of an ItemType can be retrieved using the below URL

/odata/ItemType('<<item_type_id>>')/Property

But when we try to do the same for RelationshipType using the below URL, getting 404 not found error

/odata/RelationshipType('<<relationship_type_id>>')/Property

{
    "error": {
        "code": "NotFound",
        "message": "Property 'Property' of 'RelationshipType' itemtype not found"
    }
}
How do I retrieve properties of a RelationshipType using ARAS REST API?