src/vs/editor/common/core/selection.ts/Selection/constructor
class Selection:	constructor(selectionStartLineNumber: number, selectionStartColumn: number, positionLineNumber: number, positionColumn: number) {
		super(selectionStartLineNumber, selectionStartColumn, positionLineNumber, positionColumn);
		this.selectionStartLineNumber = selectionStartLineNumber;
		this.selectionStartColumn = selectionStartColumn;
		this.positionLineNumber = positionLineNumber;
		this.positionColumn = positionColumn;
	}