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SDO_Model_Type::isSequencedType — Test to see if this is a sequenced type
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。使用本扩展风险自担 。
Test to see if this is a sequenced type. Returns TRUE if this type is
sequence, otherwise returns FALSE.
Sequenced types can have the ordering across properties preserved and can
contain unstructured text. For more information on sequenced types see
the section on
Working with Sequenced Data
Objects.
None.
Returns TRUE if this type is sequence, otherwise return FALSE.