class_docstr: Generic matlab matrix writing class 
class_docstr_tok: ["Generic","matlab","matrix","writing","class"]
code: def write_empty_struct(self):
      self.write_header((1, 1), mxSTRUCT_CLASS)
      # max field name length set to 1 in an example matlab struct
      self.write_element(np.array(1, dtype=np.int32))
      # Field names element is empty
      self.write_element(np.array([], dtype=np.int8))
  
imports: from __future__ import division, print_function, absolute_import
  import os
  import time
  import sys
  import zlib
  from io import BytesIO
  import warnings
  import numpy
  from numpy.compat import asbytes, asstr
  import scipy.sparse
  from scipy._lib.six import string_types
  from .byteordercodes import native_code, swapped_code
  from .miobase import MatFileReader, docfiller, matdims, read_dtype, arr_to_chars, arr_dtype_number, MatWriteError, MatReadError, MatReadWarning
  from .mio5_utils import VarReader5
  from .mio5_params import MatlabObject, MatlabFunction, MDTYPES, NP_TO_MTYPES, NP_TO_MXTYPES, miCOMPRESSED, miMATRIX, miINT8, miUTF8, miUINT32, mxCELL_CLASS, mxSTRUCT_CLASS, mxOBJECT_CLASS, mxCHAR_CLASS, mxSPARSE_CLASS, mxDOUBLE_CLASS, mclass_info
  from .streams import ZlibInputStream
label_desc: Use image node_id 15 for calling the VarWriter5 obj's underlying member method code with example usage: obj.write_empty_struct() without return types