Runs the transparency group of the current soft mask (SoftMask), reporting its events to
processor: the group in the coordinate system of SoftMaskMatrix, from the
initial graphics state otherwise. Does nothing when there is no soft mask.
public void RunSoftMaskGroup(ContentProcessor processor)
The processor that receives the group's events.
ISO 32000-2 §11.6.5.1 and §11.6.6. The nesting limit is shared with forms, patterns and Type 3 glyphs.