{
  "name": "file_exists",
  "type": "function",
  "groups": ["Files and Paths"],
  "description": "Returns true if a file path exists.",
  "arguments": [{
    "arg": "path",
    "description": "a file path"
  }],
  "examples": [{
    "expression": "file_exists('/home/qgis/data/country_boundaries.shp')",
    "returns": "true"
  }],
  "tags": ["path", "exists", "file"]
}