GeoJSON with an empty MultiPolygon

Nzara-Ringasi_Roads.geojson

{
    "type": "FeatureCollection",
    "generator": "JOSM",
    "features": [
        {
            "type": "Feature",
            "properties": {
                "type": "multipolygon"
            },
            "geometry": {
                "type": "MultiPolygon",
                "coordinates": [
                    [
                    ]
                ]
            }
        },
        {
            "type": "Feature",
            "properties": {
                "landuse": "forest"
            },
            "geometry": {
                "type": "Polygon",
                "coordinates": [
                    [
                        [
                            28.20842051491,
                            4.57196646607
                        ],
                        [
                            28.18082988655,
                            4.57465590318
                        ],
                        [
                            28.16558032071,
                            4.58654069582
                        ],
                        [
                            28.11872987354,
                            4.58422082241
                        ],
                        [
                            28.09641352489,
                            4.59102351941
                        ],
                        [
                            28.02039719720,
                            4.65436662713
                        ],
                        [
                            27.98463368514,
                            4.65616789859
                        ],
                        [
                            27.93654318349,
                            4.68079747640
                        ],
                        [
                            27.92209524362,
                            4.70442129456
                        ],
                        [
                            27.93171007020,
                            4.74391972298
                        ],
                        [
                            27.95541334314,
                            4.75831801802
                        ],
                        [
                            27.98077338296,
                            4.75866794419
                        ],
                        [
                            28.01142381967,
                            4.74574637917
                        ],
                        [
                            28.04865483366,
                            4.74874852733
                        ],
                        [
                            28.08375123530,
                            4.72466534816
                        ],
                        [
                            28.09698544520,
                            4.76792576966
                        ],
                        [
                            28.09295680794,
                            4.84644254851
                        ],
                        [
                            28.10556824374,
                            4.88126202314
                        ],
                        [
                            28.14760393402,
                            4.97728972593
                        ],
                        [
                            28.17336589597,
                            5.04078224671
                        ],
                        [
                            28.25425181176,
                            4.94405269794
                        ],
                        [
                            28.23435476251,
                            4.93982146934
                        ],
                        [
                            28.22318792543,
                            4.92250559975
                        ],
                        [
                            28.23553963220,
                            4.86702594576
                        ],
                        [
                            28.23063188995,
                            4.81288788847
                        ],
                        [
                            28.24088255997,
                            4.77513660634
                        ],
                        [
                            28.27438027192,
                            4.75236680871
                        ],
                        [
                            28.27675546923,
                            4.71547530444
                        ],
                        [
                            28.34569721778,
                            4.77675026016
                        ],
                        [
                            28.36685338485,
                            4.78045997943
                        ],
                        [
                            28.38959447894,
                            4.77215566676
                        ],
                        [
                            28.39689868763,
                            4.77843521281
                        ],
                        [
                            28.39944447206,
                            4.80995789177
                        ],
                        [
                            28.38787418663,
                            4.83233813110
                        ],
                        [
                            28.38787490072,
                            4.85693232706
                        ],
                        [
                            28.36275512280,
                            4.88094290375
                        ],
                        [
                            28.34623717801,
                            4.91258024438
                        ],
                        [
                            28.43721358741,
                            4.93679360399
                        ],
                        [
                            28.46593109143,
                            4.90391805359
                        ],
                        [
                            28.48845742346,
                            4.82587828811
                        ],
                        [
                            28.48361252958,
                            4.73799839722
                        ],
                        [
                            28.46762077197,
                            4.71544569397
                        ],
                        [
                            28.43632837247,
                            4.69420287694
                        ],
                        [
                            28.38671900000,
                            4.61210600000
                        ],
                        [
                            28.34989500000,
                            4.59070900000
                        ],
                        [
                            28.20842051491,
                            4.57196646607
                        ]
                    ]
                ]
            }
        }
    ]
}