Accessing notebook metadata in template

[Eric Matthes]

Once I've set a custom cell metadata property, I can access that property easily in a template:

{% if cell.metadata.get('my_property')... %}

I see that I can edit notebook metadata, but I can't figure out how to access that metadata in a template. This fails, because notebook is not defined:

{% if notebook.metadata.get("my_notebook_property")... %}

Is there a straightforward way to access notebook metadata in a template?

[Eric Matthes]

I just found it. 

{% if nb.metadata.get("my_notebook_property")... %}