in indigo.js [368:376]
IndigoObject.prototype.xyz = function() {
this.d._setSessionId();
let xyzPtr = this.d._lib.indigoXYZ(this.id); /* int atom */
if (xyzPtr.length == 0)
throw IndigoException(this.d.getLastError());
let xyz = xyzPtr.deref();
return [xyz.x, xyz.y, xyz.z];
};