This function takes an identifier and checks to see if it has been obsoleted.
Arguments
- pid
(character) The persistent identifier of a data, metadata, or resource map object on a DataONE member node.
- formatType
(character) Optional. The format type to return (one of 'data', 'metadata', or 'resource').
Examples
if (FALSE) {
# Most data URLs and identifiers work
check_version("https://cn.dataone.org/cn/v2/resolve/urn:uuid:a2834e3e-f453-4c2b-8343-99477662b570")
check_version("doi:10.18739/A2ZF6M")
# Specify a formatType (data, metadata, or resource)
check_version("doi:10.18739/A2ZF6M", formatType = "metadata")
# Returns a warning if the identifier has been obsoleted
check_version("doi:10.18739/A2HF7Z", formatType = "metadata")
# Returns an error if no matching identifiers are found
check_version("a_test_pid")
# Returns a warning if several identifiers are returned
check_version("10.18739/A2057CR99")
}