Allows the format builder to be extended

src/main/java/net/knarcraft/knarlib/formatting/FormatBuilder.java

@@ -15,13 +15,13 @@ import java.util.List;
  * A builder for making a replaced and formatted string
  */
 @SuppressWarnings("unused")
-public final class FormatBuilder {
+public class FormatBuilder {
 
     private static @Nullable StringFormatter stringFormatter = null;
     private static final IllegalStateException NOT_SETUP_EXCEPTION = new IllegalStateException("String formatter has not been set!");
     private static final String LIST_DELIMITER = ",";
-    private StringBuilder stringBuilder = null;
-    private @NotNull String stringToFormat;
+    protected StringBuilder stringBuilder = null;
+    protected @NotNull String stringToFormat;
 
     /**
      * Instantiates a new format builder
@@ -247,7 +247,7 @@ public final class FormatBuilder {
      *
      * @return <p>The current string</p>
      */
-    private String getCurrentString() {
+    protected String getCurrentString() {
         if (this.stringBuilder != null) {
             this.stringToFormat += this.stringBuilder.toString();
             this.stringBuilder = null;
@@ -264,7 +264,7 @@ public final class FormatBuilder {
      * @throws IllegalStateException <p>If the string formatter has not been set, and the input is a translatable message.</p>
      */
     @NotNull
-    private <K> String asString(@NotNull K input, @NotNull String delimiter) {
+    protected  <K> String asString(@NotNull K input, @NotNull String delimiter) {
         if (input instanceof String string) {
             return string;
         } else if (input instanceof TranslatableMessage translatableMessage) {