raise_class_collision

# File railties/lib/rails_generator/commands.rb, line 382
          def raise_class_collision(class_name)
            message = "  The name '\#{class_name}' is either already used in your application or reserved by Ruby on Rails.\n  Please choose an alternative and run this generator again.\n"
            if suggest = find_synonyms(class_name)
              if suggest.any?
                message << "\n  Suggestions:  \n\n"
                message << suggest.join("\n")
              end
            end
            raise UsageError, message
          end