#' @title ScienceDirect Article Recommendation Retrieval
#'
#' @description This function wraps \code{\link{generic_elsevier_api}} to give a
#' retrieval of a recommendation from the Elsevier Article Recommendation API
#' @param id Identifier for recommendation
#' @param identifier Type of identifier to use
#' @param http_end any additional end to http statement.
#' See \code{\link{generic_elsevier_api}}
#' @param ... Arguments to be passed to \code{\link{generic_elsevier_api}}
#' @export
#' @seealso \code{\link{generic_elsevier_api}}
#' @return List of elements, similar to \code{\link{generic_elsevier_api}}
#' @examples
#' api_key = get_api_key(NULL, error = FALSE)
#' if (!is.null(api_key)){
#' x = recommendation_retrieval("S1053811915002700", identifier = "pii",
#' verbose = FALSE)
#' }
recommendation_retrieval <- function(
id, # Identifier for recommendation
identifier = c("eid", "pii"), # type of identifier
http_end = NULL,
...
){
identifier = match.arg(identifier)
ender = paste0("/", paste(identifier, id, sep = "/"))
if (!is.null(http_end)) {
ender = paste(ender, http_end, sep = "/")
}
s = generic_elsevier_api( type = "recommendation",
http_end = ender, ...)
return(s)
}
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