The function would trigger the creation of duplicate Draft Polar Arrays (only on Linux and only if the Fuse option is selected and the Link Array option deselected). Forum topic: https://forum.freecad.org/viewtopic.php?t=84090 The reapply_diffuse_color function is no longer required anyway as Issue #8340 has been fixed.
2020 May
These modules contain the basic functions to create custom "scripted objects" defined within the workbench.
Each scripted object has a "make function" like make_rectangle,
a proxy class like Rectangle, and a viewprovider class
like ViewProviderRectangle.
Each make function should import the two corresponding classes
in order to create a new object with the correct data
and visual properties for that object.
These classes should be defined in the modules in draftobjects/
and draftviewproviders/.
The make functions can be used in both graphical and non-graphical
modes (terminal only); in the latter case the viewprovider is not used.
The functions are also used internally by the graphical "GuiCommands"
(buttons, menu actions) defined in the modules in draftguitools/
and drafttaskpanels/.
These make functions were previously defined in the Draft.py module,
which was very large. Now Draft.py just loads the individual modules
in order to provide these functions under the Draft namespace.
import Draft
new_obj1 = Draft.make_rectangle(...)
new_obj2 = Draft.make_circle(...)
new_obj3 = Draft.make_line(...)
The functions in the Draft namespace are considered to be the public
application programming interface (API) of the workbench, and should be
usable in scripts, macros, and other workbenches.
For more information see the thread: [Discussion] Splitting Draft tools into their own modules