There's no such module

activesupport/lib/active_support/core_ext/string/inflections.rb

@@ -128,10 +128,10 @@ def dasherize
 
   # Removes the module part from the constant expression in the string.
   #
-  #   'ActiveRecord::CoreExtensions::String::Inflections'.demodulize # => "Inflections"
-  #   'Inflections'.demodulize                                       # => "Inflections"
-  #   '::Inflections'.demodulize                                     # => "Inflections"
-  #   ''.demodulize                                                  # => ''
+  #   'ActiveSupport::Inflector::Inflections'.demodulize # => "Inflections"
+  #   'Inflections'.demodulize                           # => "Inflections"
+  #   '::Inflections'.demodulize                         # => "Inflections"
+  #   ''.demodulize                                      # => ''
   #
   # See also +deconstantize+.
   def demodulize

activesupport/lib/active_support/inflector/methods.rb

@@ -198,10 +198,10 @@ def dasherize(underscored_word)
 
     # Removes the module part from the expression in the string.
     #
-    #   demodulize('ActiveRecord::CoreExtensions::String::Inflections') # => "Inflections"
-    #   demodulize('Inflections')                                       # => "Inflections"
-    #   demodulize('::Inflections')                                     # => "Inflections"
-    #   demodulize('')                                                  # => ""
+    #   demodulize('ActiveSupport::Inflector::Inflections') # => "Inflections"
+    #   demodulize('Inflections')                           # => "Inflections"
+    #   demodulize('::Inflections')                         # => "Inflections"
+    #   demodulize('')                                      # => ""
     #
     # See also #deconstantize.
     def demodulize(path)