launchctl start com.swarmcast.mlbnexdefautobahn
launchctl stop com.swarmcast.mlbnexdefautobahn
You could also change the Label in the plist file if you want a shorter command to type (I create aliases).
Here is a copy of my com.swarmcast.mlbnexdefautobahn.plist:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>KeepAlive</key>
<false/>
<key>Label</key>
<string>com.swarmcast.mlbnexdefautobahn</string>
<key>Program</key>
<string>/Users/jamesb/Library/Application Support/Swarmcast/MLBNexDefAutobahn.app/Contents/MacOS/MLBNexDefAutobahn</string>
<key>LimitLoadToSessionType</key>
<string>Aqua</string>
<key>RunAtLoad</key>
<false/>
<key>WorkingDirectory</key>
<string>/Users/jamesb/Library/Application Support/Swarmcast</string>
<key>ExitTimeOut</key>
<integer>10</integer>
<key>HopefullyExitsFirst</key>
<true/>
</dict>
</plist>