Adds specified metadata into a certificate file. `Command syntax:` ```actionscript cellframe-node-tool cert add_metadata <cert name> <key:type:length:value> ``` `Options:` ```actionscript <cert name> - name of the certificate <key:type:length:value> - key of the data : data type : data length (in chars) : data value ``` ### Usage Example `Command:` ```actionscript cellframe-node-tool cert add_metadata railgun_test 1:string:12:"how dare you?" ``` `Response:` ``` The metainformation was successfully added to railgun_test certificate ```