docs: public  BooleanProperty isCurvedProperty() {
  		if (this.isCurved == null) {
  			this.isCurved = new ReadOnlyBooleanWrapper(this, MathFXAttributeNames.IS_CURVED, false);
  			this.isCurved.bind(Bindings.createBooleanBinding(() -> {
  				for (final PathElementType type : innerTypesProperty()) {
  					if (type == PathElementType.CURVE_TO || type == PathElementType.QUAD_TO) {
  						return true;
  					}
  				}
  				return false;
  			},
  					innerTypesProperty()));
  		}
  		return this.isCurved;
  	}