Fix Java 21 warnings about possible this escape in constructor

src/main/java/org/sablecc/sablecc/In_Production.java

@@ -23,7 +23,7 @@ public class In_Production
 
   public In_Production(AProd prod)
   {
-    setName(prod.getId().getText());
+    this.name = prod.getId().getText();
 
     AElem[] prodTransforms = prod.getProdTransform().toArray(new AElem[0]);
     prodTransformElems = new String[prodTransforms.length];
@@ -57,11 +57,6 @@ public class In_Production
     nbAlts = alts.length;
   }
 
-  public void setName(String name)
-  {
-    this.name = name;
-  }
-
   public String getName()
   {
     return name;
@@ -72,7 +67,7 @@ public class In_Production
     return nbAlts;
   }
 
-  public void addAlternative(int position, In_Alternative alt)
+  private void addAlternative(int position, In_Alternative alt)
   {
     alternatives[position] = alt;
   }