code: async function getPreferredMcpLanguages(accessToken) {
      const mcpSettings = await getMcpSettings(accessToken);
      const twoLetterArray = mcpSettings.language || [];
  
      return twoLetterArray.map((twoLetter) => {
          let language = countryLanguage.getLanguages().find((a) => a.iso639_1 === twoLetter);
          return {
              lang: twoLetter,
              iso639_1: language ? language.iso639_1 : twoLetter,
              iso639_2: language ? language.iso639_2 : undefined,
              iso639_3: language ? language.iso639_3 : undefined,
          };
      });
  }
docs: Get the preferred language from Customizr
  @param {string} accessToken
  @return {Promise<*|Uint8Array|BigInt64Array|{lang: *, iso639_1: (string), iso639_2: *, iso639_3: *}[]|Float64Array|Int8Array|Float32Array|Int32Array|Uint32Array|Uint8ClampedArray|BigUint64Array|Int16Array|Uint16Array>}