This data structure contains the metadata pertaining to an APS key
valid only if bitmask & EMBER_KEY_HAS_INCOMING_FRAME_COUNTER uint32_t
valid only if bitmask & EMBER_KEY_HAS_OUTGOING_FRAME_COUNTER uint32_t
valid only if core_key_type == SL_ZB_SEC_MAN_KEY_TYPE_TC_LINK_WITH_TIMEOUT uint16_t
This data structure contains the metadata pertaining to an APS key