Applies an ExclusionFilter to the collector.
Assembly: RevitAPI (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0)
Return ValueA handle to this collector. This is the same collector that has just been modified, returned so you can chain multiple calls together in one line.
Elements passed to this filter will be automatically excluded from the results. If you have an active iterator to this collector it will be stopped by this call.