https://www.mathworks.com/help/robotics/urseries/ug/add-custom-ros-message-definitions-to-matlab.html
Add Custom ROS Message Definitions to MATLAB - MATLAB & Simulink
Add custom ROS messages to transmit information.
message definitionsaddcustomrosmatlab
https://www.ibm.com/docs/en/ste/10.1.2?topic=properties-message-property-definitions-values
Message property definitions and values
messagepropertydefinitionsvalues