modified return types of getPlayer and getEntity to remove the exception type

Author: DatAsianBoi123

src/main/java/com/datasiqn/commandcore/commands/CommandSource.java

@@ -8,9 +8,19 @@
 import org.jetbrains.annotations.NotNull;
 
 public interface CommandSource {
-    @NotNull Result<Player, IllegalStateException> getPlayer();
+    /**
+     * Gets the player executing command
+     * @return A result describing the player. This can be safely unwrapped if the command link {@link CommandLink#requiresPlayer() requiresPlayer}.
+     */
+    @NotNull
+    Result<Player, String> getPlayer();
 
-    @NotNull Result<Entity, IllegalStateException> getEntity();
+    /**
+     * Gets the entity executing command
+     * @return A result describing the entity. This can be safely unwrapped if the command link {@link CommandLink#requiresEntity() requiresEntity}.
+     */
+    @NotNull
+    Result<Entity, String> getEntity();
 
     @NotNull CommandSender getSender();
 

src/main/java/com/datasiqn/commandcore/commands/context/impl/CommandSourceImpl.java

@@ -17,13 +17,13 @@ public CommandSourceImpl(CommandSender sender) {
     }
 
     @Override
-    public @NotNull Result<Player, IllegalStateException> getPlayer() {
-        return Result.resolve(() -> (Player) sender, error -> new IllegalStateException("Sender is not a player"));
+    public @NotNull Result<Player, String> getPlayer() {
+        return Result.resolve(() -> (Player) sender, error -> "Sender is not a player");
     }
 
     @Override
-    public @NotNull Result<Entity, IllegalStateException> getEntity() {
-        return Result.resolve(() -> (Entity) sender, error -> new IllegalStateException("Sender is not an entity"));
+    public @NotNull Result<Entity, String> getEntity() {
+        return Result.resolve(() -> (Entity) sender, error -> "Sender is not an entity");
     }
 
     @Override