dist/scripts/vendor.min.js
function(element, bool) {
        var argCount = arguments.length;

        if (argCount === 0) {
          // () - Global getter
          bool = !!animationsEnabled;
        } else {
          var hasElement = isElement(element);

          if (!hasElement) {
            // (bool) - Global setter
            bool = animationsEnabled = !!element;
          } else {
            var node = getDomNode(element);

            if (argCount === 1) {
              // (element) - Element getter
              bool = !disabledElementsLookup.get(node);
            } else {
              // (element, bool) - Element setter
              if (!disabledElementsLookup.has(node)) {
                // The element is added to the map for the first time.
                // Create a listener to remove it on `$destroy` (to avoid memory leak).
                jqLite(element).on('$destroy', removeFromDisabledElementsLookup);
              }
              disabledElementsLookup.set(node, !bool);
            }
          }
        }

        return bool;
      }
function(element, bool) {
        var argCount = arguments.length;

        if (argCount === 0) {
          // () - Global getter
          bool = !!animationsEnabled;
        } else {
          var hasElement = isElement(element);

          if (!hasElement) {
            // (bool) - Global setter
            bool = animationsEnabled = !!element;
          } else {
            var node = getDomNode(element);

            if (argCount === 1) {
              // (element) - Element getter
              bool = !disabledElementsLookup.get(node);
            } else {
              // (element, bool) - Element setter
              if (!disabledElementsLookup.has(node)) {
                // The element is added to the map for the first time.
                // Create a listener to remove it on `$destroy` (to avoid memory leak).
                jqLite(element).on('$destroy', removeFromDisabledElementsLookup);
              }
              disabledElementsLookup.set(node, !bool);
            }
          }
        }

        return bool;
      }
this method has four signatures: () - global getter (bool) - global setter (element) - element getter (element, bool) - element setter<F37>