defineDeprecationWarning = function (methodName, info) {
	    if (canDefineProperty) {
	      Object.defineProperty(ReactComponent.prototype, methodName, {
	        get: function () {
	          process.env.NODE_ENV !== 'production' ? warning(false, '%s(...) is deprecated in plain JavaScript React classes. %s', info[0], info[1]) : void 0;
	          return undefined;
	        }
	      });
	    }
	  }
Deprecated APIs. These APIs used to exist on classic React classes but since
we would like to deprecate them, we're not going to move them over to this
modern base class. Instead, we define a getter that warns if it's accessed.