Occluded variable holds the list of visible objects instead of occluded objects in Webgpu Backend

Discussion
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1

Why does occluded variable holds list of visible objects instead of occluded objects.

I could see

for ( let i = 0; i < currentOcclusionQueryObjects.length; i ++ ) {
				if ( results[ i ] == BigInt( 0 ) ) {

					occluded.add( currentOcclusionQueryObjects[ i ] );

				}

			}

in the resolveOccludedAsync method, .
whats the purpose of having ! here ?.