src/bosh-softlayer-cpi/registry/fakes/fake_client.go
func (c *FakeClient) Fetch(instanceID string) (registry.AgentSettings, error) {
	c.FetchCalled = true
	return c.FetchSettings, c.FetchErr
}
func (c *FakeClient) Fetch(instanceID string) (registry.AgentSettings, error) {
	c.FetchCalled = true
	return c.FetchSettings, c.FetchErr
}
// Fetch gets the agent settings for a given instance ID.