code: public FieldSpec buildConditionField(int index, Struct<PluralType> branch) {
      String fieldDoc = PluralRulePrinter.print(branch);
      String name = String.format("COND_%d", index);
      FieldSpec.Builder field = FieldSpec.builder(PLURAL_CONDITION, name, PRIVATE, STATIC, FINAL)
          .addJavadoc(fieldDoc + "\n");
  
      List<Node<PluralType>> expressions = branch.nodes();
  
      CodeBlock.Builder code = CodeBlock.builder();
      code.beginControlFlow("(o) ->");
  
      int size = expressions.size();
      for (int i = 0; i < size; i++) {
        renderExpr(i == 0, code, expressions.get(i));
      }
      code.addStatement("return true");
      code.endControlFlow();
  
      field.initializer(code.build());
      return field.build();
    }
docs: Constructs a lambda Condition field that represents a chain of AND conditions,
  that together is a single branch in an OR condition.