{
  "name": "file_size",
  "type": "function",
  "groups": ["Files and Paths"],
  "description": "Returns the size (in bytes) of a file.",
  "arguments": [ {"arg":"path","description":"a file path"}],
  "examples": [ { "expression":"file_size('/home/qgis/data/country_boundaries.geojson')", "returns":"5674"}]
}