code: public ApiResponse<GetMOHFilesResponse> getMOHFilesWithHttpInfo() throws ApiException {
          com.squareup.okhttp.Call call = getMOHFilesValidateBeforeCall(null, null);
          Type localVarReturnType = new TypeToken<GetMOHFilesResponse>(){}.getType();
          return apiClient.execute(call, localVarReturnType);
      }
docs: Get WAV files for MOH.
  Returns exist WAV files.
  @return ApiResponse&lt;GetMOHFilesResponse&gt;
  @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body