GitLab

generate: Use dictionaries for details in index template objects

Template objects that act as indices—class, interface, record, union—do
not need full template objects for their methods, functions,
properties, and signals; those objects contain a lot more information
than the index will show, so there's no point in computing a lot of
state that will just be ignored.

We should only create template objects when we need to create the actual
output file.