Where does NetworkManager keep DHCP client lease data?

[Jim Garrison <jhg jhmg net>]

When using dhclient, the current lease info, including expiration
time, is in /var/lib/dhclient/dhclient.leases, and contains
something similar to

    lease {
      interface "enp3s0";
      fixed-address [redacted];
      option subnet-mask 255.255.254.0;
      option dhcp-lease-time 3523;
      option routers [redacted];
      option dhcp-message-type 5;
      option dhcp-server-identifier 96.113.84.141;
      option domain-name-servers 127.0.0.1,75.75.75.75,75.75.76.76;
      option domain-search "[redacted]";
      option dhcp-renewal-time 2016;
      option broadcast-address 255.255.255.255;
      option dhcp-rebinding-time 3073;
      option domain-name "hsd1.or.comcast.net.";
      renew 3 2022/06/22 23:59:57;
      rebind 4 2022/06/23 00:23:15;
      expire 4 2022/06/23 00:30:45;
    }

However, my system (Centos 8 Stream) uses NetworkManager which, based on
my research, uses its own internal DHCP client.  Looking in
/var/lib/NetworkManager I see

    $ sudo ls -1 /var/lib/NetworkManager/
    internal-79cbd87e-9d65-4aa4-8768-88b460fd372c-enp3s0.lease
    internal-79cbd87e-9d65-4aa4-8768-88b460fd372c-ens1.lease
    internal-bdaf2eb0-de2e-4573-a415-214629c7b757-enp3s0.lease
    NetworkManager-intern.conf
    NetworkManager.state
    secret_key
    seen-bssids
    timestamps

which looks promising.  However, the lease files contain only the IP
address.  For example, the first file listed above contains only

    # This is private data. Do not parse.
    ADDRESS=[redacted]

Simple question: Where does NetworkManager keep the lease data so it
knows when it needs to renew the lease?