The circle object to check
let circle = { center: { x: 10, y: 10 }, radius: 10 }
// The following instruction will not throw an error
JMap.Geometry.checkCircle(circle)
circle = { radius: 10 } // missing center
// The following instruction will throw an error
JMap.Geometry.checkCircle(circle)
JMap.Geometry.checkCircle
Throw an error if the provided parameter is not a valid circle.