src/vs/editor/common/viewModel/viewModelLines.ts/ViewModelLinesFromProjectedModel/validateViewRange
class ViewModelLinesFromProjectedModel:	public validateViewRange(viewRange: Range, expectedModelRange: Range): Range {
		const validViewStart = this.validateViewPosition(viewRange.startLineNumber, viewRange.startColumn, expectedModelRange.getStartPosition());
		const validViewEnd = this.validateViewPosition(viewRange.endLineNumber, viewRange.endColumn, expectedModelRange.getEndPosition());
		return new Range(validViewStart.lineNumber, validViewStart.column, validViewEnd.lineNumber, validViewEnd.column);
	}