src\Framework\System\Windows\Documents\TextContainer.cs (3)
787AddChange(startPosition, null, symbolCount, /* leftEdgeCharCount */ 0, charCount, textChange, property, affectsRenderOnly);
1143AddChange(startEdgePosition, endEdgePosition, elementNode.SymbolCount,
2943AddChange(startPosition, endPosition, elementNode.SymbolCount,