public List<String> getRunningWorkflow(String workflowName, Integer version) {
        Validate.notBlank(workflowName, "Workflow name cannot be blank");
        return getForEntity(
                "workflow/running/{name}",
                new Object[] {"version", version},
                new GenericType<List<String>>() {},
                workflowName);
    }
Retrieve all running workflow instances for a given name and version

@param workflowName the name of the workflow
@param version the version of the wokflow definition. Defaults to 1.
@return the list of running workflow instances
client/src/main/java/com/netflix/conductor/client/http/WorkflowClient.java