Some workflow methods trigger incorrectly a workflowSession save

Workflow methods like

WorkflowContextAware#getWorkflowContext
DocumentWorkflow#hints
DocumentWorkflow#getBranch
DocumentWorkflow#listBranches
etc

are non-state-modifying workflow methods which never should result in a workflow session save. The workflow methods are already marked correctly through @WorkflowAction, for example:

@WorkflowAction(loggable = false, mutates = false)
    Set<String> listBranches() throws WorkflowException;

Only in WorkflowManagerImpl.WorkflowInvocationHandler#invoke only hard-coded 'hints' method is tested to avoid a session save.