The Core/echo method returns exactly the same arguments as it is given. It is useful for
testing if you have a valid authenticated connection to a JMAP API endpoint.
Param: args
The invocation arguments for the specified method
Param: methodCallId
An optional unique symbol to identify this method call for result referencing
Returns
An object representing the named arguments for the specified method
The Core/echo method returns exactly the same arguments as it is given. It is useful for testing if you have a valid authenticated connection to a JMAP API endpoint.