ActiveRecord API documentation

Can anyone point me to where in the API docs for Active Record one find
the description of things like “primary_key_prefix_type” and
“generate_read_methods”. I cannot seem to find any core documentation
reference to these and similar configuration attributes.

It seems from the code of active_record/base.rb around line 380 that
these are meant to be documented in ActiveRecord::BAse but that a #nodoc
directive is preventing this section from being generated. However, I
cannot tell whether this omission is intentional or not.