src/vs/editor/common/core/range.ts/Range/containsPosition
class Range:	public static containsPosition(range: IRange, position: IPosition): boolean {
		if (position.lineNumber < range.startLineNumber || position.lineNumber > range.endLineNumber) {
			return false;
		}
		if (position.lineNumber === range.startLineNumber && position.column < range.startColumn) {
			return false;
		}
		if (position.lineNumber === range.endLineNumber && position.column > range.endColumn) {
			return false;
		}
		return true;
	}