code: public String getTypeWildcard() {
          if (isTypeGeneric() == false) {
              return typeRaw;
          }
          String result = "?";
          if (typeGenericExtends.length > 1) {
              result += ", ?";
              if (typeGenericExtends.length > 2) {
                  result += ", ?";
              }
          }
          return typeRaw + '<' + result + '>';
      }
docs: Gets the full type of the bean with wildcarded parameterization, such as '{@code Foo<?>}'.
  @return the wildcarded type, not null