code: private TypeSpec generateContentValuesBuilderClass(ObjectMappableAnnotatedClass clazz,
        String mapperClassName, String className) {
  
      String cvVarName = "contentValues";
  
      MethodSpec constructor = MethodSpec.constructorBuilder()
          .addModifiers(Modifier.PRIVATE)
          .addStatement("$L = new $T()", cvVarName, ClassName.get(ContentValues.class))
          .build();
  
      TypeSpec.Builder builder = TypeSpec.classBuilder(className)
          .addJavadoc(
              "Builder class to generate type sage {@link $T } . At the end you have to call {@link #build()}\n",
              TypeName.get(ContentValues.class))
          .addModifiers(Modifier.PUBLIC, Modifier.STATIC)
          .addField(ContentValues.class, cvVarName, Modifier.PRIVATE)
          .addMethod(constructor)
          .addMethod(MethodSpec.methodBuilder("build")
              .addJavadoc("Creates and returns a $T from the builder\n",
                  TypeName.get(ContentValues.class))
              .addJavadoc("@return $T", TypeName.get(ContentValues.class))
              .addModifiers(Modifier.PUBLIC)
              .addStatement("return $L", cvVarName)
              .returns(ContentValues.class)
              .build());
  
      String packageName = getPackageName(clazz);
      for (ColumnAnnotateable e : clazz.getColumnAnnotatedElements()) {
        e.generateContentValuesBuilderMethod(builder,
            ClassName.get(packageName, mapperClassName, className), cvVarName);
      }
  
      return builder.build();
    }
docs: Generates the ContentValues Builder Class
  
  @param clazz The class you want to create a builder for
  @param className The classname  @return The Builder class