If srcWorkspace is given:
Creates a new Workspace with the specified name initialized with a
clone of the content of the workspace srcWorkspace. Semantically,
this method is equivalent to creating a new workspace and manually
cloning srcWorkspace to it; however, this method may assist some
implementations in optimizing subsequent Node.update and Node.merge
calls between the new workspace and its source.
The new workspace can be accessed through a login specifying its name.