Circle CCTP.
Route is supported when cctpAddress is defined on both source and destination tokens.
Circle CCTP V2.
Route is supported when cctpV2Address is defined on both source and destination tokens.
LayerZero OFT.
Route is supported when source and destination tokens have the same oftId
and oftBridgeAddress is defined on both chains.
xReserve.
Route is supported when xReserve is defined on both source and destination tokens.
Bridging protocol used for a transfer. Only ActiveMessenger values are supported.