Sign the specified data groups and produce an SOd (MRTD).

$ bin/signclient signdatagroups
usage: signdatagroups <options>
Request MRTD data groups to be signed
 -data <arg>            Data to send to the worker.
 -encoding <arg>        Encoding of the data option. None or base64.
                        Default: none.
 -host <arg>            Server name or IP address. Default: localhost
 -keyalias <arg>        Alias of the key in the keystore to use for
                        authentication.
 -keystore <arg>        Keystore with private key and certificate for
                        client certificate authentication.
 -keystorepwd <arg>     Password for reading the keystore.  If keystore is
                        specified but not this keystore password option,
                        the CLI will instead prompt for the password.
 -metadata <arg>        Additional meta data to send to the signer. The
                              parameters should be given in the form KEY=VALUE.
                              This option can be given multiple times.
 -password <arg>        Password for authentication. If username is
                        specified but not this password option, the CLI
                        will instead prompt for the password.
 -port <arg>            Server port. Default: 8080 (for HTTP), 8442 for
                        HTTPS and 8443 for HTTPS with client
                        authentication.
 -protocol <arg>        Method of interacting with SignServer. HTTP or
                        CLIENTWS. Default: HTTP.
 -repeat <arg>          Run the operation this number of times. Default: 1
 -servlet <arg>         Servlet to call. Default /signserver/sod
 -truststore <arg>      Keystore with trusted certificates to use with
                        HTTPS.
 -truststorepwd <arg>   Password for the keystore with trusted
                        certificates. If truststore is specified but not
                        this truststore password option, the CLI will
                        instead prompt for the password.
 -username <arg>        Username for authentication.
 -workerid <arg>        ID of worker which should perform the operation.
 -workername <arg>      Name of worker which should perform the operation.

Sample usages:
a) signdatagroups -workername MRTDSODSigner -data
"1=value1&2=value2&3=value3"
b) signdatagroups -workername MRTDSODSigner -data
"1=PJaDAX+eS/M9D77dJr8UP9ct6bndFFRBt18GBAR+oo4=&2=BTfUgfc6dXM0MoBS2jr5Ymzt
lwKOILhJ9hFcIs12UZc=&3=idxq5/Bqn0a1Za8D6rDs4L9gJNNlm346HQNXPP6wtZ0="
c) signdatagroups -workername MRTDSODSigner -data
"1=value1&2=value2&3=value3" -metadata param1=value1 -metadata
param2=value2