对于业务流程中的每个状态，我们也对每个需要支持转换动作的域对象的属性和它们之间的关系进行建模。
For each state in the business process, we also model the attributes of each domain object and the relationships between them needed to support the actions of the transitions.
可以使用查询，并指定该任务的属性，例如状态、描述和流程数据。
A query can be used, specifying properties of the task such as its state, description, and process data.
自定义属性在已经针对流程或活动实例进行设置之后可用，或在流程或活动模板上进行设置的情况下，在所有任务状态下可用。
Custom properties are available after they have been set for the process or activity instance, or in all task states, when they are set on the process or activity template.
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