This method is only available on newer versions. The first available version (v7.2.3) is shown here.
nil_uuid()
Returns the nil UUID. This is a special form of UUID that is specified to have all 128 bits set to zero.
# File activesupport/lib/active_support/core_ext/digest/uuid.rb, line 58 def self.nil_uuid "00000000-0000-0000-0000-000000000000" end
