appendSpans       475 Source/platform/geometry/Region.cpp         result.appendSpans(shape1, spans1, spans1End);
appendSpans       477 Source/platform/geometry/Region.cpp         result.appendSpans(shape2, spans2, spans2End);
appendSpans       122 Source/platform/geometry/Region.h         void appendSpans(const Shape&, SpanIterator begin, SpanIterator end);