class_docstr: !
  @brief Package extractor provides servies to unpack pyclustering package.
class_docstr_tok: ["!","@","brief","Package","extractor","provides","servies","to","unpack","pyclustering","package","."]
code: def __extract_data(self, ccore_package_pointer):
      if ccore_package_pointer == 0:
          return []
  
      pointer_package = cast(
          ccore_package_pointer, POINTER(pyclustering_package)
      )
      return self.__unpack_pointer_data(pointer_package)
  
imports: from ctypes import *
  import collections.abc
  import numpy
label_desc: Use image node_id 3 for calling the package_extractor obj's underlying member method code with example usage: obj.__extract_data(ccore_package_pointer) and returns: self, list