public static String toMB(long bytes) {
		if (bytes < 0) {
			return "NaN";
		}
		long mb = bytes / MB_SIZE;

		if (mb < 9999) {
			return mb + "m";
		} else {
			return toSizeUnit(bytes).trim();
		}
	}
public static String toMB ( long bytes ) { if ( bytes < 0 ) { return "NaN" ; } long mb = bytes / MB_SIZE ; if ( mb < 9999 ) { return mb + "m" ; } else { return toSizeUnit ( bytes ) . trim ( ) ; } }
Formats a long value containing "number of bytes" to its megabyte representation. If the value is negative, "n/a"
will be returned.