    # File lib/chef/file_cache.rb, line 175
          def has_key?(path)
            validate(
              {
                :path => path
              },
              {
                :path => { :kind_of => String },
              }
            )
            full_path = create_cache_path(path, false)
            if File.exists?(full_path)
              true
            else
              false
            end
          end