code: def string_tag(bitmap, key, model=METADATA_MODELS.FIMD_EXIF_MAIN):
      """Retrieve the value of a metadata tag with the given string key as a
      string."""
      tag = ctypes.c_int()
      if not _FI.FreeImage_GetMetadata(
          model, bitmap, _bytestr(key), ctypes.byref(tag)
      ):
          return
      char_ptr = ctypes.c_char * _FI.FreeImage_GetTagLength(tag)
      return char_ptr.from_address(_FI.FreeImage_GetTagValue(tag)).raw()
  
imports: import sys
  import os
  import ctypes
  import ctypes.util
  import numpy
label_desc: Use image node_id 8 for calling a global function with example usage: string_tag(bitmap, key, model) and returns: char_ptr