MoveChild
virtual status_t MoveChild(KPartition* child, off_t offset,
virtual status_t MoveChild(KPartition* child, off_t offset,
virtual status_t MoveChild(BMutablePartition* child,
status_t error = parent->fDelegate->MoveChild(fDelegate, offset);
return fPartitionHandle->MoveChild(&child->fMutablePartition, offset);
status_t MoveChild(Delegate* child, off_t offset);