code: def extend(self, ns):
      append = self.append
      for n in ns:
          append(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 7 for calling the GrowableArray obj's underlying member method code with example usage: obj.extend(ns) without return types