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SDO_DataObject::createDataObject — Create a child SDO_DataObject
此函数是实验性的。此函数的表象，包括名称及其相关文档都可能在未来的 PHP 发布版本中未通知就被修改。使用本函数风险自担 。
Create a child SDO_DataObject of the default type for the property identified. The data object is automatically inserted into the tree and a reference to it is returned.
identifier
Identifies the property for the data object type to be created. Can be either a property name (string), a property index (int), or an SDO_Model_Property.
Returns the newly created SDO_DataObject.
SDO_PropertyNotFoundException
Thrown if the identifier does not correspond to a property of the data object.