The returned ModelElement is the model element that is being replaced by the newly added model element, or NULL if no element is being replaced.
返回的ModelElement是新添加的模型元素所替换的模型元素,如果没有替换任何元素,则为NULL。
The returned ModelElement is the model element that is being replaced by the newly added model element, or NULL if no element is being replaced.
返回的ModelElement是新添加的模型元素所替换的模型元素,如果没有替换任何元素,则为NULL。
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