##' Add up two numbers (Description)
##'
##' We want to add up two numbers, blalala... (Details)
##' @title add two numbers
##' @param x first number
##' @param y second number
##' @return sum of two numbers
##' @author Caleb
##' @export
##' @examples
##' f(1,2)
##' f(4,5)
f <- function(x, y) x + y
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