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#' Defunct ggmap functions
#'
#' As provider services change over time, ggmap has to make corresponding
#' changes. Since its inception, a few services have stopped offering their
#' previous functionality, and in some cases this has required us to remove
#' those functions from the package entirely.
#'
#' The following are defunct ggmap functions:
#' \itemize{
#' \item get_cloudemademap
#' \item get_navermap
#' \item get_openstreetmap
#' \item get_stamenmap
#' }
#'
#' @name ggmap-defunct
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