| Name | Description |
| add | Add a new part to this collection. The part's parent will be set to the owner of this collection, or null if this is the root parts collection. If the passed MachinePartInput has a MachineAxisInput a new MachineAxis will be created. |
| classType | Static function that all classes support that returns the type of the class as a string. The returned string matches the string returned by the objectType property. For example if you have a reference to an object and you want to check if it's a SketchLine you can use myObject.objectType == fusion.SketchLine.classType(). |
| createPartInput | Create a new MachinePartInput. |
| item | Get the part at index in this collection. |
| itemById | Get the part with the given ID. |
| Name | Description |
| count | Get the number of parts in this collection. |
| isValid | Indicates if this object is still valid, i.e. hasn't been deleted or some other action done to invalidate the reference. |
| objectType | This property is supported by all objects in the API and returns a string that contains the full name (namespace::objecttype) describing the type of the object. It's often useful to use this in combination with the classType method to see if an object is a certain type. For example: if obj.objectType == adsk.core.Point3D.classType(): |