It seems out of place that we specify how to create & update certifications in this section. Same for energy ratings. Better placed in a separate section which talks about certifications & energy ratings. For example http://gresb.github.io/api-docs/#asset-certifications.
http://gresb.github.io/api-docs/#asset-data-patch-entities-entity_id-assets-asset_id
It seems out of place that we specify how to create & update certifications in this section. Same for energy ratings. Better placed in a separate section which talks about certifications & energy ratings. For example http://gresb.github.io/api-docs/#asset-certifications.