def METHOD_NAME(self):
    content = {}
    v = EepromContentVisitor(content)
    v.visit_tlv('tlv1', Eeprom._TLV_CODE_PRODUCT_NAME, 7, 'MSN3420')
    v.visit_tlv('tlv2', Eeprom._TLV_CODE_VENDOR_EXT, 4, 'ext1')
    v.visit_tlv('tlv3', Eeprom._TLV_CODE_VENDOR_EXT, 4, 'ext2')
    assert content[hex(Eeprom._TLV_CODE_PRODUCT_NAME)] == 'MSN3420'
    assert content[hex(Eeprom._TLV_CODE_VENDOR_EXT)] == ['ext1', 'ext2']