To create an assembly reference
By default, the representation namespace uses the assembly definition file name.
In the Outliner, an assemblyReference nodes appears, represented by an icon. By default, the new assembly reference inherits the name of the referenced assemblyDefinition node.
Turn on Asset centric selection in the Preferences window. See Selection preferences.
Selecting the representation selects its assemblyReference node.
You can now access the Scene Assembly menu by -clicking the representation and selecting it from the menu that appears.
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