{  "name": "reverse4",  "kind": "diff",  "description": "reverse four distinct lines (tie-breaks)",  "a_hex": "610a620a630a640a",  "b_hex": "640a630a620a610a",  "edits": [    {      "op": "delete",      "a": 0,      "len": 3    },    {      "op": "equal",      "a": 3,      "b": 0,      "len": 1    },    {      "op": "insert",      "b": 1,      "len": 3    }  ],  "hunks": [    {      "base": [        0,        3      ],      "new": [        0,        0      ]    },    {      "base": [        4,        4      ],      "new": [        1,        4      ]    }  ]}