$7\mathrm{.}4\mathrm{.}1$: Writing a recursive math method.

Write code to complete raiseToPower$().$ Sample output if userBase is $4$ and userExponent is $2$ is shown below. Note: This example is for practicing recursion; a non$-$recursive method, or using the built$-$in method pow$(),$ would be more common.

$4^2=16$