* Creates a new Component from the specified config object using the
* config object's xtype to determine the class to instantiate.
* @param {Object} config A configuration object for the Component you wish to create.
* Creates a new Component from the specified config object using the
* config object's xtype to determine the class to instantiate.
* @param {Object} config A configuration object for the Component you wish to create.
* the config object does not contain a <code>xtype</code>. (Optional if the config contains a <code>xtype</code>).
* @return {Ext.Component} The newly instantiated Component.
*/
* the config object does not contain a <code>xtype</code>. (Optional if the config contains a <code>xtype</code>).
* @return {Ext.Component} The newly instantiated Component.
*/