code: function (tagName, propertyName) {
                  if (!__properties.hasOwnProperty(propertyName)) {
                      return "--";
                  }
                  var property = __properties[propertyName];
                  if (typeof property == "object") {
                      tagName = tagName.toUpperCase();
                      if (!property.hasOwnProperty(tagName)) {
                          return "--";
                      }
                      property = property[tagName];
                  }
                  return property;
              }
docs: Gives information about what access should be granted for a given property of a DOM element of a given
  type.
  @param {String} tagName tag name (this is case insensitive, for example "a" and "A" are equivalent)
  @param {String} propertyName property name (this is case sensitive)
  @return {String} "--" for no access, "r-" for read-only access, "rw" for read-write access