定义序列
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UNOIDL 中的序列是包含各种数量的相同 UNOIDL 类型的元素的数组。下面是一个 sequence 术语的示例：
// this term could occur in a UNOIDL definition block somewhere
sequence< com::sun::star::uno::XInterface >
它的开头是关键字 sequence，然后给出元素类型（包含在 尖括号 <> 内）。元素类型必须是已知类型。序列类型可以用作参数、返回值、属性或结构成员，与其他所有类型一样。如果有必要，序列也可以嵌套。
// this could be a nested sequence definition
sequence< sequence< long > >
// this could be an operation using sequences in some interface definition
sequence< string > getNamesOfIndex(sequence< long > indexes);
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