[
  {
    "name": "visible-image",
    "content": "See https://cdn.example/image.png",
    "tags": [["imeta", "url https://cdn.example/image.png", "m image/png", "filename image.png"]],
    "attachments": ["https://cdn.example/image.png"],
    "text": "See https://cdn.example/image.png"
  },
  {
    "name": "fenced-reference",
    "content": "```\nhttps://cdn.example/image.png\n```",
    "tags": [["imeta", "url https://cdn.example/image.png", "m image/png"]],
    "attachments": [],
    "text": "https://cdn.example/image.png"
  },
  {
    "name": "duplicate-reference",
    "content": "https://cdn.example/image.png",
    "tags": [
      ["imeta", "url https://cdn.example/image.png", "m image/png"],
      ["imeta", "url https://cdn.example/image.png", "m image/png"]
    ],
    "attachments": ["https://cdn.example/image.png"],
    "text": "https://cdn.example/image.png"
  }
]