Looker custom visualization options

Hello, currently I'm developing custom visualization for looker instance.  As a reference for visualization API I'm using:
https://github.com/looker-open-source/custom_visualizations_v2/blob/master/docs/api_reference.md
however, I guess  all UI configuration options (properties) are not included in the docs: 
https://github.com/looker-open-source/custom_visualizations_v2/blob/master/docs/api_reference.md#pre...
where can I find full documentation for all available property names for looker options (ex: type, display, default, label... etc). 

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