The first thing we need to do is to remove the automatically generated operation;
to accomplish this, click on the hello operation and then click on the Remove
To add a web service operation, we simply need to click on the Add Operation
button and fill in the blanks in the resulting window.
Our web service will have two operations: one to convert from inches to centimeters
and another one to convert centimeters to inches. Both of these operations will
take a single parameter of type double and return a double value. After clicking
on the Add Operation button, we can enter the required information for the