dist/angular-bootstrap-switch.js
function(element, attr, modelAttr) {
          if (!isInit) {
            return;
          }
          var newValue = getSwitchAttrValue(modelAttr);
          element.bootstrapSwitch(attr, newValue);
        }
function(element, attr, modelAttr) {
          if (!isInit) {
            return;
          }
          var newValue = getSwitchAttrValue(modelAttr);
          element.bootstrapSwitch(attr, newValue);
        }
Set a bootstrapSwitch parameter according to the angular-bound attribute.
The parameter will be changed only if the switch has already been initialized
(to avoid creating it before the model is ready).

@param element   The switch to apply the parameter modification to
@param attr      The name of the switch parameter
@param modelAttr The name of the angular-bound parameter