create_command

# File railties/lib/rails/command/base.rb, line 146
          def create_command(meth)
            if meth == "perform"
              alias_method command_name, meth
            else
              # Prevent exception about command without usage.
              # Some commands define their documentation differently.
              @usage ||= meth
              @desc  ||= ""

              super
            end
          end