Better api generation

Things to consider:

• breaking changes (removed imports), so up minor version, because we are still not in 1.0

src/main/jastadd/backend/API.jadd

@@ -53,11 +53,11 @@ aspect BackendAPI {
     }
     sb.append("() {\n");
     if (resolverHelper | serializer) {
-      sb.append(ind(2) + "if (" + getImplAttributeField() + " != null && " + getImplAttributeField() + ".is$Unresolved()) {\n");
-        sb.append(ind(3) + "if (" + getImplAttributeField() + ".as$Unresolved().getUnresolved$ResolveOpposite()) {\n");
-          sb.append(ind(4) + "set" + nameCapitalized() + "(resolve" + nameCapitalized() + "ByToken(" + getImplAttributeField() + ".as$Unresolved().getUnresolved$Token()));\n");
+      sb.append(ind(2) + "if (" + getImplAttributeField() + " != null && " + getImplAttributeField() + "." + isUnresolvedMethod + "()) {\n");
+        sb.append(ind(3) + "if (" + getImplAttributeField() + "." + asUnresolvedMethod + "().get" + unresolvedPrefix + "ResolveOpposite()) {\n");
+          sb.append(ind(4) + "set" + nameCapitalized() + "(resolve" + nameCapitalized() + resolvePostfix + "(" + getImplAttributeField() + "." + asUnresolvedMethod + "().get" + unresolvedPrefix + "Token()));\n");
         sb.append(ind(3) + "} else {\n");
-          sb.append(ind(4) + "set" + getImplAttributeName() + "(resolve" + nameCapitalized() + "ByToken(" + getImplAttributeField() + ".as$Unresolved().getUnresolved$Token()));\n");
+          sb.append(ind(4) + "set" + getImplAttributeName() + "(resolve" + nameCapitalized() + resolvePostfix + "(" + getImplAttributeField() + "." + asUnresolvedMethod + "().get" + unresolvedPrefix + "Token()));\n");
         sb.append(ind(3) + "}\n");
       sb.append(ind(2) + "}\n");
     }