Invoke an RPC method in the Lean server.
fully qualified name of the method to call.
arguments to the invoked method.
Optionaloptions: ClientRequestOptions
additional configuration for the request.
a promise that resolves to the returned value, or an error in case the call fails.
An RpcSessionForFile with
callspecialized to a specific positionp.Morally, this bundles an RPC session with the set of RPC methods available at the position
p.It is okay to mix RPC references between different RpcSessionAtPos objects created from the same RpcSessionForFile.