Lack of documentation about AnalysisConfig option identifiers

[HealthyPear]

I was following the tutorial here
https://docs.gammapy.org/1.2/tutorials/starting/analysis_1.html

and I had to go into the source code to know e.g. which are the allowed string identifiers for the
background subsection.

For example in this case, going backwards from the class I was using, I traced back the answer to my doubt:

AnalysisConfig --> BackgroundConfig --> BackgroundMethodEnum

which allowed me to understand the possible choices are reflected, fov_background or ring.

Apologies if I have overlooked a clearer source of information, but if I am right, then at least the API reference should be updated with more classes (to start, all those used by AnalysisConfig in order to make clear which are all the supported options to use when filling an analysis configuration file).