project: Fix deprecations and supress unchecked warnings

http-api/src/main/java/net/runelite/http/api/animation/AnimationClient.java

@@ -57,8 +57,9 @@ public class AnimationClient
 
 		logger.debug("Built URI: {}", url);
 
+		RequestBody body = RequestBody.Companion.create(json, JSON);
 		Request request = new Request.Builder()
-			.post(RequestBody.create(JSON, json))
+			.post(body)
 			.url(url)
 			.build();
 

http-api/src/main/java/net/runelite/http/api/chat/ChatClient.java

@@ -38,6 +38,8 @@ import okhttp3.Response;
 
 public class ChatClient
 {
+
+	private static final RequestBody body = RequestBody.Companion.create(new byte[0], null);
 	private static final Predicate<String> LAYOUT_VALIDATOR = Pattern
 		.compile("\\[[A-Z]+]:(\\s*\\w+\\s*(\\([A-Za-z]+\\))?,?)+")
 		.asPredicate();
@@ -52,8 +54,9 @@ public class ChatClient
 			.addQueryParameter("kc", Integer.toString(kc))
 			.build();
 
+
 		Request request = new Request.Builder()
-			.post(RequestBody.create(null, new byte[0]))
+			.post(body)
 			.url(url)
 			.build();
 
@@ -96,7 +99,7 @@ public class ChatClient
 			.build();
 
 		Request request = new Request.Builder()
-			.post(RequestBody.create(null, new byte[0]))
+			.post(body)
 			.url(url)
 			.build();
 
@@ -141,7 +144,7 @@ public class ChatClient
 			.build();
 
 		Request request = new Request.Builder()
-			.post(RequestBody.create(null, new byte[0]))
+			.post(body)
 			.url(url)
 			.build();
 
@@ -190,7 +193,7 @@ public class ChatClient
 			.build();
 
 		Request request = new Request.Builder()
-			.post(RequestBody.create(null, new byte[0]))
+			.post(body)
 			.url(url)
 			.build();
 
@@ -233,7 +236,7 @@ public class ChatClient
 			.build();
 
 		Request request = new Request.Builder()
-			.post(RequestBody.create(null, new byte[0]))
+			.post(body)
 			.url(url)
 			.build();
 
@@ -280,7 +283,7 @@ public class ChatClient
 			.build();
 
 		Request request = new Request.Builder()
-			.post(RequestBody.create(null, new byte[0]))
+			.post(body)
 			.url(url)
 			.build();
 
@@ -303,7 +306,7 @@ public class ChatClient
 			.build();
 
 		Request request = new Request.Builder()
-			.post(RequestBody.create(null, new byte[0]))
+			.post(body)
 			.url(url)
 			.build();
 
@@ -424,7 +427,7 @@ public class ChatClient
 			.build();
 
 		Request request = new Request.Builder()
-			.post(RequestBody.create(null, new byte[0]))
+			.post(body)
 			.url(url)
 			.build();
 
@@ -453,7 +456,7 @@ public class ChatClient
 			.build();
 
 		Request request = new Request.Builder()
-			.post(RequestBody.create(null, new byte[0]))
+			.post(body)
 			.url(url)
 			.build();
 

http-api/src/main/java/net/runelite/http/api/discord/DiscordClient.java

@@ -52,8 +52,9 @@ public class DiscordClient
 
 	private void message(HttpUrl url, DiscordMessage discordMessage, int retryAttempt, int maxAttempts)
 	{
+		RequestBody body = RequestBody.Companion.create(gson.toJson(discordMessage), JSON);
 		Request request = new Request.Builder()
-			.post(RequestBody.create(JSON, gson.toJson(discordMessage)))
+			.post(body)
 			.url(url)
 			.build();
 

http-api/src/main/java/net/runelite/http/api/examine/ExamineClient.java

@@ -67,9 +67,10 @@ public class ExamineClient
 
 		logger.debug("Built URI: {}", url);
 
+		RequestBody body = RequestBody.Companion.create(text, TEXT);
 		Request request = new Request.Builder()
 			.url(url)
-			.post(RequestBody.create(TEXT, text))
+			.post(body)
 			.build();
 
 		RuneLiteAPI.CLIENT.newCall(request).enqueue(new Callback()

http-api/src/main/java/net/runelite/http/api/ge/GrandExchangeClient.java

@@ -53,9 +53,10 @@ public class GrandExchangeClient
 			.addPathSegment("ge")
 			.build();
 
+		RequestBody body = RequestBody.Companion.create(GSON.toJson(grandExchangeTrade), JSON);
 		Request request = new Request.Builder()
 			.header(RuneLiteAPI.RUNELITE_AUTH, uuid.toString())
-			.post(RequestBody.create(JSON, GSON.toJson(grandExchangeTrade)))
+			.post(body)
 			.url(url)
 			.build();
 

http-api/src/main/java/net/runelite/http/api/loottracker/LootTrackerClient.java

@@ -59,9 +59,10 @@ public class LootTrackerClient
 			.addPathSegment("loottracker")
 			.build();
 
+		RequestBody body = RequestBody.Companion.create(GSON.toJson(lootRecord), JSON);
 		Request request = new Request.Builder()
 			.header(RuneLiteAPI.RUNELITE_AUTH, uuid.toString())
-			.post(RequestBody.create(JSON, GSON.toJson(lootRecord)))
+			.post(body)
 			.url(url)
 			.build();
 

http-api/src/main/java/net/runelite/http/api/xtea/XteaClient.java

@@ -57,8 +57,9 @@ public class XteaClient
 
 		logger.debug("Built URI: {}", url);
 
+		RequestBody body = RequestBody.Companion.create(json, JSON);
 		Request request = new Request.Builder()
-			.post(RequestBody.create(JSON, json))
+			.post(body)
 			.url(url)
 			.build();