Access to the selection in the editor.
| activeContext | Returns the current context object, as was set via SetActiveObjectWithContext. | 
| activeGameObject | Returns the active game object. (The one shown in the inspector). | 
| activeInstanceID | Returns the instanceID of the actual object selection. Includes Prefabs, non-modifiable objects. | 
| activeObject | Returns the actual object selection. Includes Prefabs, non-modifiable objects. | 
| activeTransform | Returns the active transform. (The one shown in the inspector). | 
| assetGUIDs | Returns the guids of the selected assets. | 
| count | Returns the number of objects in the Selection. | 
| gameObjects | Returns the actual game object selection. Includes Prefabs, non-modifiable objects. | 
| instanceIDs | The actual unfiltered selection from the Scene returned as instance ids instead of objects. | 
| objects | The actual unfiltered selection from the Scene. | 
| selectionChanged | Delegate callback triggered when currently active/selected item has changed. | 
| transforms | Returns the top level selection, excluding Prefabs. | 
| Contains | Returns whether an object is contained in the current selection. | 
| GetFiltered | Returns the current selection filtered by type and mode. | 
| GetTransforms | Allows for fine grained control of the selection type using the SelectionMode bitmask. | 
| SetActiveObjectWithContext | Selects an object with a context. |