raw details (from release v2.2.3):
{
"name": "etcd_endpoint",
"long": "etcd-endpoint",
"required_if": "tower_storage\", \"etcd",
"value_name": "HOST:PORT",
"takes_value": "true",
"multiple": "true",
"validator": "solana_net_utils::is_host_port",
"help": "etcd gRPC endpoint to connect with"
}