public void runDecider(String workflowId) {
        Preconditions.checkArgument(
                StringUtils.isNotBlank(workflowId), "workflow id cannot be blank");
        stub.decideWorkflow(
                WorkflowServicePb.DecideWorkflowRequest.newBuilder()
                        .setWorkflowId(workflowId)
                        .build());
    }
Retrieve all workflow instances for a given workflow name between a specific time period

@param workflowName the name of the workflow
@param version the version of the workflow definition. Defaults to 1.
@param startTime the start time of the period
@param endTime the end time of the period
@return returns a list of workflows created during the specified during the time period
grpc-client/src/main/java/com/netflix/conductor/client/grpc/WorkflowClient.java