<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_state_identifier_for_page(self, page):
 """Return the state identifier for a given page """

        for identifier, page_info in list(self.tabs.items()):
            if page_info["page"] is page:  # reference comparison on purpose
                return identifier