Add takes in an arbitrary number of integers and returns the sum.

Divide takes in an arbitrary number of integers and returns the quotient.

Maths takes in an arbitrary number of integers and the math operation to perform and returns the result.

Modulus takes in an arbitrary number of integers and returns the remainder.

Multiply takes in an arbitrary number of integers and returns the product.

SayHello takes in a name and a language and returns a greeting.

Subtract takes in an arbitrary number of integers and returns the difference.

TestFunc is a test function that adds two numbers with overflow protection.

Explicit invalid operation.

Operation represents a mathematical operation.