def METHOD_NAME(
    self,
) -> None:
    np_array = np.array([[127, "128", 129], [255, np.nan, 257], [511, 512, 513]])
    self.data.add_np_array(
        np_array, column_name={0: "First"}, column_dtype={2: int}
    )
    self.assertEqual(
        {
            "data": {
                "series": [
                    {
                        "name": "First",
                        "type": "dimension",
                        "values": ["127", "255", "511"],
                    },
                    {
                        "name": "1",
                        "type": "dimension",
                        "values": ["128", "", "512"],
                    },
                    {
                        "name": "2",
                        "type": "measure",
                        "values": [129, 257, 513],
                    },
                ]
            }
        },
        self.data.build(),
    )