How to use the dugite.GitError.ForcePushRejected function in dugite

return 'The requested changes conflict with one or more files in the repository.'
    case DugiteError.BranchAlreadyExists:
      return 'A branch with that name already exists.'
    case DugiteError.BadRevision:
      return 'Bad revision.'
    case DugiteError.NotAGitRepository:
      return 'This is not a git repository.'
    case DugiteError.ProtectedBranchForcePush:
      return 'This branch is protected from force-push operations.'
    case DugiteError.ProtectedBranchRequiresReview:
      return 'This branch is protected and any changes requires an approved review. Open a pull request with changes targeting this branch instead.'
    case DugiteError.PushWithFileSizeExceedingLimit:
      return "The push operation includes a file which exceeds GitHub's file size restriction of 100MB. Please remove the file from history and try again."
    case DugiteError.HexBranchNameRejected:
      return 'The branch name cannot be a 40-character string of hexadecimal characters, as this is the format that Git uses for representing objects.'
    case DugiteError.ForcePushRejected:
      return 'The force push has been rejected for the current branch.'
    case DugiteError.InvalidRefLength:
      return 'A ref cannot be longer than 255 characters.'
    case DugiteError.CannotMergeUnrelatedHistories:
      return 'Unable to merge unrelated histories in this repository.'
    case DugiteError.PushWithPrivateEmail:
      return 'Cannot push these commits as they contain an email address marked as private on GitHub.'
    case DugiteError.LFSAttributeDoesNotMatch:
      return 'Git LFS attribute found in global Git configuration does not match expected value.'
    case DugiteError.ProtectedBranchDeleteRejected:
      return 'This branch cannot be deleted from the remote repository because it is marked as protected.'
    case DugiteError.ProtectedBranchRequiredStatus:
      return 'The push was rejected by the remote server because a required status check has not been satisfied.'
    case DugiteError.BranchRenameFailed:
      return 'The branch could not be renamed.'
    case DugiteError.PathDoesNotExist: