module MetaRequest

def self.rails_root

Experimental RBS support (using type sampling data from the type_fusion project). 

def self.rails_root: () -> String

This signature was generated using 4 samples from 1 application.

again in AppNotifications and LogInterceptor
stash a frozen copy away so we're not allocating a new string over and over 
def self.rails_root
  @rails_root ||= Rails.root.to_s.freeze
end