| targetGuid | [[TargetGuidByName()]] 返回的目标的 GUID。 |
| name | 阶段的名称。 |
| shellPath | The shell path. |
| shellScript | The shell script. |
string 返回匹配阶段的 GUID；如果不存在，则返回 null。
Returns the GUID of matching copy shell script build phase for the given target.
If the target already has a shell script build phase with the same name, dstPath, and subfolderSpec configured for it, the function returns the existing phase. The new phase is placed at the end of the list of build phases configured for the target.