{
  "name": "sym_difference",
  "type": "function",
  "groups": ["GeometryGroup"],
  "description": "Returns a geometry that represents the portions of two geometries that do not intersect.",
  "arguments": [{
    "arg": "geometry1",
    "description": "a geometry"
  }, {
    "arg": "geometry2",
    "description": "a geometry"
  }],
  "examples": [{
    "expression": "geom_to_wkt( sym_difference( geom_from_wkt( 'LINESTRING(3 3, 4 4, 5 5)' ), geom_from_wkt( 'LINESTRING(3 3, 8 8)' ) ) )",
    "returns": "'LINESTRING(5 5, 8 8)'"
  }],
  "tags": ["portions", "represents", "intersect"]
}