How can i get message type using Rosbridge and rosapi

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At the moment I have extracted the name of the topic and the type of its message in the format, for example:

/rosbridge_websocket/get_loggers:"roscpp/GetLoggers"

Now I am trying to get the message that this topic (or service) expects. I assume that these are standard messages (std_msg) and can be received by using the function

'rosapi/message_details'

I have studied all the modules of ROSLIBJS and ROSapi, but have not found anything that will help solve my question