small plugin code help

[gimpygirl]

I don't understand how the selection is "passed" to the clear function

So I select all black pixels

Code:

pdb.gimp_image_select_color(image, CHANNEL_OP_REPLACE, image.active_layer, (0, 0, 0))

Now I want to delete the selection

Code:

pdb.gimp-drawable-edit-clear(???)

what parameter to insert there? The selection is made in the previous line but where is it now?