Get the worker number on the cloud. Return a list with two elements,
which are the number of initializing and running workers. The names must
be "initializing" and "running". The default method will
return list(initializing = 0L, running = .getExpectedWorkerNumber(cluster))
getDockerWorkerNumbers(provider, cluster, verbose)# S4 method for ANY
getDockerWorkerNumbers(provider, cluster, verbose = 0L)
S4 CloudProvider object. The service provider.
S4 DockerCluster object.
Integer. The verbose level, default 1.
list(initializing = ?, running = ?).
getDockerWorkerNumbers,ANY-method: The default getDockerWorkerNumbers method. Return c(0L, .getExpectedWorkerNumber(cluster))