code: def to_file(self, dbfile):
      if isinstance(self.array, array):
          dbfile.write_array(self.array)
      else:
          write_long = dbfile.write_long
          for n in self.array:
              write_long(n)
  
imports: from array import array
  from whoosh.compat import xrange
  from whoosh.system import emptybytes
  from whoosh.system import pack_byte, unpack_byte
  from whoosh.system import pack_ushort_le, unpack_ushort_le
  from whoosh.system import pack_uint_le, unpack_uint_le
label_desc: Use image node_id 9 for calling the GrowableArray obj's underlying member method code with example usage: obj.to_file(dbfile) without return types