{
  "name": "$id",
  "type": "function",
  "groups": ["Record and Attributes"],
  "description": "Returns the feature id of the current row. <b>WARNING: This function is deprecated. It is recommended to use the replacement @id variable instead.</b>",
  "examples": [{
    "expression": "$id",
    "returns": "42"
  }],
  "tags": ["row", "current"]
}