def METHOD_NAME(self):
    # create an xblock with verified group access
    AUDIT_ID = settings.COURSE_ENROLLMENT_MODES['audit']['id']
    VERIFIED_ID = settings.COURSE_ENROLLMENT_MODES['verified']['id']
    MASTERS_ID = settings.COURSE_ENROLLMENT_MODES['masters']['id']
    verified_section = BlockFactory.create(
        category="sequential",
        metadata={'group_access': {ENROLLMENT_TRACK_PARTITION_ID: [VERIFIED_ID]}}
    )
    # and a section with no restriction
    section2 = BlockFactory.create(
        category="sequential",
    )
    section3 = BlockFactory.create(
        category='sequential',
        metadata={'group_access': {ENROLLMENT_TRACK_PARTITION_ID: [AUDIT_ID]}}
    )
    with self.store.branch_setting(ModuleStoreEnum.Branch.draft_preferred):
        # create the master's mode. signal will add masters to the verified section
        self.create_mode('masters', 'masters')
        verified_section_ret = self.store.get_item(verified_section.location)
        section2_ret = self.store.get_item(section2.location)
        section3_ret = self.store.get_item(section3.location)
        # the verified section will now also be visible to master's
        assert verified_section_ret.group_access[ENROLLMENT_TRACK_PARTITION_ID] == [VERIFIED_ID, MASTERS_ID]
        assert section2_ret.group_access == {}
        assert section3_ret.group_access == {ENROLLMENT_TRACK_PARTITION_ID: [AUDIT_ID]}