Changed folder structure, added explicit nullable for extensions.

Extensions/Cloudflare.Zones/Models/Nameserver.cs

@@ -0,0 +1,22 @@
+namespace AMWD.Net.Api.Cloudflare.Zones
+{
+	/// <summary>
+	/// A nameserver.
+	/// </summary>
+	public class Nameserver
+	{
+		/// <summary>
+		/// The nameserver type.
+		/// </summary>
+		[JsonProperty("type")]
+		public virtual NameserverType Type { get; set; }
+
+		// TODO: DEPRECATED? - not available on API request.
+		///// <summary>
+		///// Configured nameserver set to be used for this zone.
+		///// </summary>
+		///// <value>Range: <c>1 &lt;=</c> X <c>&lt;= 5</c></value>
+		//[JsonProperty("ns_set")]
+		//public virtual int NameserverSet { get; set; }
+	}
+}

Extensions/Cloudflare.Zones/Models/StartOfAuthority.cs

@@ -0,0 +1,83 @@
+namespace AMWD.Net.Api.Cloudflare.Zones
+{
+	/// <summary>
+	/// The SOA (Start of Authority) record.
+	/// </summary>
+	public class StartOfAuthority
+	{
+		/// <summary>
+		/// Initializes a new instance of the <see cref="StartOfAuthority"/> class.
+		/// </summary>
+		/// <param name="primaryNameserver">The primary nameserver.</param>
+		/// <param name="zoneAdministrator">The zone administrator. First dot will be interpreted as @-sign.</param>
+		/// <param name="ttl">The time to live of the SOA record.</param>
+		/// <param name="refresh">Time in seconds after which secondary servers should re-check the SOA record to see if the zone has been updated.</param>
+		/// <param name="retry">Time in seconds after which secondary servers should retry queries after the primary server was unresponsive.</param>
+		/// <param name="expire">Time in seconds of being unable to query the primary server after which secondary servers should stop serving the zone.</param>
+		/// <param name="minimumTtl">The time to live (TTL) for negative caching of records within the zone.</param>
+		public StartOfAuthority(string primaryNameserver, string zoneAdministrator, int ttl, int refresh, int retry, int expire, int minimumTtl)
+		{
+			PrimaryNameserver = primaryNameserver;
+			ZoneAdministrator = zoneAdministrator;
+			Ttl = ttl;
+			Refresh = refresh;
+			Retry = retry;
+			Expire = expire;
+			MinimumTtl = minimumTtl;
+		}
+
+		/// <summary>
+		/// Time in seconds of being unable to query the primary server after which secondary servers should stop serving the zone.
+		/// </summary>
+		/// <value>Unit: seconds. Range: <c>86400 &lt;=</c> X <c>&lt;= 2419200</c></value>
+		[JsonProperty("expire")]
+		public virtual int Expire { get; set; }
+
+		/// <summary>
+		/// The time to live (TTL) for negative caching of records within the zone.
+		/// </summary>
+		/// <value>Unit: seconds. Range: <c>60 &lt;=</c> X <c>&lt;= 86400</c></value>
+		[JsonProperty("min_ttl")]
+		public virtual int MinimumTtl { get; set; }
+
+		/// <summary>
+		/// The primary nameserver, which may be used for outbound zone transfers.
+		/// </summary>
+		[JsonProperty("mname", NullValueHandling = NullValueHandling.Include)]
+		public virtual string PrimaryNameserver { get; set; }
+
+		/// <summary>
+		/// Time in seconds after which secondary servers should re-check the SOA record to see if the zone has been updated.
+		/// </summary>
+		/// <value>Unit: seconds. Range: <c>600 &lt;=</c> X <c>&lt;= 86400</c></value>
+		[JsonProperty("refresh")]
+		public virtual int Refresh { get; set; }
+
+		/// <summary>
+		/// Time in seconds after which secondary servers should retry queries after the primary server was unresponsive.
+		/// </summary>
+		/// <value>Unit: seconds. Range: <c>600 &lt;=</c> X <c>&lt;= 86400</c></value>
+		[JsonProperty("retry")]
+		public virtual int Retry { get; set; }
+
+		/// <summary>
+		/// The email address of the zone administrator, with the first label representing the local part of the email address.
+		/// </summary>
+		/// <remarks>
+		/// The first dot is interpreted as @ sign.
+		/// <br/>
+		/// admin.example.com => admin@example.com
+		/// <br/>
+		/// test\.user.example.org => test.user@example.org
+		/// </remarks>
+		[JsonProperty("rname", NullValueHandling = NullValueHandling.Include)]
+		public virtual string ZoneAdministrator { get; set; }
+
+		/// <summary>
+		/// The time to live (TTL) of the SOA record itself.
+		/// </summary>
+		/// <value>Unit: seconds. Range: <c>300 &lt;=</c> X <c>&lt;= 86400</c></value>
+		[JsonProperty("ttl")]
+		public virtual int Ttl { get; set; }
+	}
+}

Extensions/Cloudflare.Zones/Models/Zone.cs

@@ -13,13 +13,13 @@ namespace AMWD.Net.Api.Cloudflare.Zones
 		/// </summary>
 		// <= 32 characters
 		[JsonProperty("id")]
-		public string Id { get; set; }
+		public string? Id { get; set; }
 
 		/// <summary>
 		/// The account the zone belongs to.
 		/// </summary>
 		[JsonProperty("account")]
-		public AccountBase Account { get; set; }
+		public AccountBase? Account { get; set; }
 
 		/// <summary>
 		/// The last time proof of ownership was detected and the zone was made active.
@@ -45,7 +45,7 @@ namespace AMWD.Net.Api.Cloudflare.Zones
 		/// Metadata about the zone.
 		/// </summary>
 		[JsonProperty("meta")]
-		public ZoneMetaData Meta { get; set; }
+		public ZoneMetaData? Meta { get; set; }
 
 		/// <summary>
 		/// When the zone was last modified.
@@ -58,37 +58,37 @@ namespace AMWD.Net.Api.Cloudflare.Zones
 		/// </summary>
 		// <= 253 characters
 		[JsonProperty("name")]
-		public string Name { get; set; }
+		public string? Name { get; set; }
 
 		/// <summary>
 		/// The name servers Cloudflare assigns to a zone.
 		/// </summary>
 		[JsonProperty("name_servers")]
-		public IReadOnlyList<string> NameServers { get; set; }
+		public IReadOnlyList<string>? NameServers { get; set; }
 
 		/// <summary>
 		/// DNS host at the time of switching to Cloudflare.
 		/// </summary>
 		[JsonProperty("original_dnshost")]
-		public string OriginalDnshost { get; set; }
+		public string? OriginalDnshost { get; set; }
 
 		/// <summary>
 		/// Original name servers before moving to Cloudflare.
 		/// </summary>
 		[JsonProperty("original_name_servers")]
-		public IReadOnlyList<string> OriginalNameServers { get; set; }
+		public IReadOnlyList<string>? OriginalNameServers { get; set; }
 
 		/// <summary>
 		/// Registrar for the domain at the time of switching to Cloudflare.
 		/// </summary>
 		[JsonProperty("original_registrar")]
-		public string OriginalRegistrar { get; set; }
+		public string? OriginalRegistrar { get; set; }
 
 		/// <summary>
 		/// The owner of the zone.
 		/// </summary>
 		[JsonProperty("owner")]
-		public OwnerBase Owner { get; set; }
+		public OwnerBase? Owner { get; set; }
 
 		/// <summary>
 		/// Indicates whether the zone is only using Cloudflare DNS services.
@@ -115,6 +115,6 @@ namespace AMWD.Net.Api.Cloudflare.Zones
 		/// <em>This is only available for Business and Enterprise plans.</em>
 		/// </summary>
 		[JsonProperty("vanity_name_servers")]
-		public IReadOnlyList<string> VanityNameServers { get; set; }
+		public IReadOnlyList<string>? VanityNameServers { get; set; }
 	}
 }

Extensions/Cloudflare.Zones/Models/ZoneDnsSetting.cs

@@ -0,0 +1,59 @@
+namespace AMWD.Net.Api.Cloudflare.Zones
+{
+	/// <summary>
+	/// The DNS settings.
+	/// </summary>
+	public class ZoneDnsSetting
+	{
+		/// <summary>
+		/// Whether to flatten all CNAME records in the zone. Note that, due to DNS limitations,
+		/// a CNAME record at the zone apex will always be flattened.
+		/// </summary>
+		[JsonProperty("flatten_all_cnames")]
+		public bool FlattenAllCnames { get; set; }
+
+		/// <summary>
+		/// Whether to enable Foundation DNS Advanced Nameservers on the zone.
+		/// </summary>
+		[JsonProperty("foundation_dns")]
+		public bool FoundationDns { get; set; }
+
+		/// <summary>
+		/// Whether to enable multi-provider DNS, which causes Cloudflare to activate the zone even when non-Cloudflare NS records exist,
+		/// and to respect NS records at the zone apex during outbound zone transfers.
+		/// </summary>
+		[JsonProperty("multi_provider")]
+		public bool MultiProvider { get; set; }
+
+		/// <summary>
+		/// Settings determining the nameservers through which the zone should be available.
+		/// </summary>
+		[JsonProperty("nameservers")]
+		public Nameserver? Nameservers { get; set; }
+
+		/// <summary>
+		/// The time to live (TTL) of the zone's nameserver (NS) records.
+		/// </summary>
+		// 30 <= X <= 86400
+		[JsonProperty("ns_ttl")]
+		public int NameserverTtl { get; set; }
+
+		/// <summary>
+		/// Allows a Secondary DNS zone to use (proxied) override records and CNAME flattening at the zone apex.
+		/// </summary>
+		[JsonProperty("secondary_overrides")]
+		public bool SecondaryOverrides { get; set; }
+
+		/// <summary>
+		/// Components of the zone's SOA record.
+		/// </summary>
+		[JsonProperty("soa")]
+		public StartOfAuthority? SOA { get; set; }
+
+		/// <summary>
+		/// Whether the zone mode is a regular or CDN/DNS only zone.
+		/// </summary>
+		[JsonProperty("zone_mode")]
+		public ZoneMode Mode { get; set; }
+	}
+}

Extensions/Cloudflare.Zones/Models/ZoneHold.cs

@@ -17,7 +17,7 @@ namespace AMWD.Net.Api.Cloudflare.Zones
 		/// Gets or sets an information whether subdomains are included in the hold.
 		/// </summary>
 		[JsonProperty("include_subdomains")]
-		public string IncludeSubdomains { get; set; }
+		public string? IncludeSubdomains { get; set; }
 
 		/// <summary>
 		/// Gets or sets the time after which the zone is no longer on hold.

Extensions/Cloudflare.Zones/Models/ZoneIdResponse.cs

@@ -10,6 +10,6 @@
 		/// </summary>
 		// <= 32 characters
 		[JsonProperty("id")]
-		public string Id { get; set; }
+		public string? Id { get; set; }
 	}
 }