src/vs/editor/common/model/pieceTreeTextBuffer/pieceTreeTextBuffer.ts/PieceTreeTextBuffer/constructor
class PieceTreeTextBuffer:	constructor(chunks: StringBuffer[], BOM: string, eol: '\r\n' | '\n', containsRTL: boolean, containsUnusualLineTerminators: boolean, isBasicASCII: boolean, eolNormalized: boolean) {
		super();
		this._BOM = BOM;
		this._mightContainNonBasicASCII = !isBasicASCII;
		this._mightContainRTL = containsRTL;
		this._mightContainUnusualLineTerminators = containsUnusualLineTerminators;
		this._pieceTree = new PieceTreeBase(chunks, eol, eolNormalized);
	}