Improve HighlightJsonEnricher way of serving highlights

{
    "highlight": {
        "dc:description": [
            "<em>fox</em>"
        ], 
        "dc:description.fulltext": [
            "<em>fox</em>"
        ], 
        "dc:title": [
            "<em>fox</em>"
        ], 
        "dc:title.fulltext": [
            "<em>fox</em>"
        ], 
        "ecm:name": [
            "<em>fox</em>"
        ], 
        "ecm:path@level4": [
            "<em>fox</em>"
        ], 
        "ecm:title": [
            "<em>fox</em>"
        ]
    }
}

{
    "highlight": [
        {
            "field": "dc:description.fulltext", 
            "segments": [
                " man were lurking in the\n\nshadows ahead, the wind would carry the smell of that\n\nman to Mr <em>Fox\u00e2\u20ac\u2122s</em> nose", 
                " there was a hole.\n\nIn the hole lived Mr <em>Fox</em> and Mrs <em>Fox</em> and their four\n\nSmall <em>Foxes</em>.\n\nEvery evening", 
                " as soon as it got dark, Mr <em>Fox</em> would say\n\nto Mrs <em>Fox</em>, \u00e2\u20ac\u02dcWell, my darling, what shall it be this time", 
                " Mrs\n\n<em>Fox</em> had told him what she wanted, Mr <em>Fox</em> would creep\n\ndown into the valley in the darkness", 
                " in a\n\ndark place somewhere on his own farm, hoping to catch\n\nthe robber.\n\nBut Mr <em>Fox</em> was too clever"
            ]
        }, 
        {
            "field": "dc:title.fulltext", 
            "segments": [
                "Fantastic Mr. <em>Fox</em>"
            ]
        }
    ]
}