Be sure that you select the Equal Verification Point on the second call and remove the value (because the reference value passed in for the request should be spelled correctly).
Modelers should make no assumptions about the location of the data, call-by-value or call-by-reference semantics, nor any implicit concurrency management facilities.
建模器应当既不考虑数据的位置、是值呼叫还是引用呼叫语义，也不考虑任何并发管理工具。
3
Modelers should make no assumptions about the location of the data, call-by-value, or call-by-reference semantics nor any implicit concurrency management facilities.