| index | The position at which to insert the new build phase. If it's higher than the total number of build phases, the new phase is added at the end. |
| targetGuid | The GUID of the target, such as the one returned by GetUnityFrameworkTargetGuid. |
| name | The name of the phase. |
| dstPath | The shell path. |
| subfolderSpec | The "subfolder spec". The following usages are known: "10" for embedding frameworks; "13" for embedding app extension content; "16" for embedding watch content. |
string Returns the GUID of the new phase.
Creates a new copy files build phase for a given target.
The build phase is inserted at the specified position. You can query all the defined build phases using GetAllBuildPhasesForTarget.