# Structs
AddRequest wrangles the two integers you plan to add together.
AddResponse contains the result from adding two numbers.
CalculatorServiceHandler implements all of the "real" functionality for the CalculatorService.
SubRequest wrangles the two integers you plan to subtract.
SubResponse contains the result from subtracting two numbers.
# Interfaces
CalculatorService provides the ability to add and subtract at WEB SCALE!.