execute (Debugger::MethodSigCommand)

    # File cli/ruby-debug/commands/method.rb, line 16
        def execute
          obj = debug_eval('method(:%s)' % @match[1])
          if obj.is_a?(Method)
            begin
              print "%s\n", obj.signature.to_s
            rescue
              errmsg("Can't get signature for '#{@match[1]}'\n")
            end
          else
            errmsg("Can't make method out of '#{@match[1]}'\n")
          end
        end