An HDF5 Uninitialized HDF5 Object Reference

{
    "apiVersion": "1.0.0",
    "datasets": {
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            "shape": {
                "class": "H5S_SIMPLE", 
                "dims": [1], 
                "maxdims": [1]
            }, 
            "type": {
                "base": "H5T_STD_REF_OBJ", 
                "class": "H5T_REFERENCE"
            }, 
            "value": [null]
        }
    }, 
    "groups": {
        "9fa94f7d-7bf7-11e4-9081-3c15c2da029e": {
            "links": [
                {
		    "class": "H5L_TYPE_HARD",
                    "title": "DS1",
		    "collection": "datasets",
                    "id": "9faa470f-7bf7-11e4-8eb6-3c15c2da029e"
                }
            ]
        }
    }, 
    "root": "9fa94f7d-7bf7-11e4-9081-3c15c2da029e"
}