{
  "function": "overlaps",
  "description": "Tests whether a geometry overlaps another. Returns true if the geometries share space, are of the same dimension, but are not completely contained by each other.",
  "arguments": [ {"arg":"geometry a","description":"a geometry"},
                 {"arg":"geometry b","description":"a geometry"}],
  "examples": [ { "expression":"overlaps( geom_from_wkt( 'LINESTRING(3 5, 4 4, 5 5, 5 3)' ), geom_from_wkt( 'LINESTRING(3 3, 4 4, 5 5)' ) )", "returns":"true"},
  { "expression":"overlaps( geom_from_wkt( 'LINESTRING(0 0, 1 1)' ), geom_from_wkt( 'LINESTRING(3 3, 4 4, 5 5)' ) )", "returns":"false"}
  ]
}