src/vs/editor/common/model/pieceTreeTextBuffer/pieceTreeBase.ts/PieceTreeBase/setEOL
class PieceTreeBase:	public setEOL(newEOL: '\r\n' | '\n'): void {
		this._EOL = newEOL;
		this._EOLLength = this._EOL.length;
		this.normalizeEOL(newEOL);
	}