This method is deprecated or moved on the latest stable version.
The last existing version (v3.2.13) is shown here.
initialize_template_class(*)
public
For old tests
# File actionpack/lib/action_controller/metal/compatibility.rb, line 34
def initialize_template_class(*)
ActiveSupport::Deprecation.warn "Calling `initialize_template_class` is deprecated and has no effect anymore.", caller
end