This adds a node which copies part of a geometry a dynamic number of times. Different parts of the geometry can be copied differing amounts of times, controlled by the amount input field. Geometry can also be ignored by use of the selection input. The output geometry contains only the copies created by the node. if the amount input is set to zero, the output geometry will be empty. The duplicate index output is an integer index with the copy number of each duplicate. Differential Revision: https://developer.blender.org/D13701