Write a Java method named createSideHourglass that constructs and returns a String representing an hourglass shape on its side using the asterisk character $\text{'}*\text{'}.$ The hourglass must have the number of rows equal to seven.

For example, if we create an hourglass of five rows, then the resulting string would be:

$"**$

$****$

$*****$

$****$

$**$

$"($where

is the new line character$).$ When this string is printed out, it would look like this: