class_docstr: A simple Device/CPU Array object in runtime.
docstr: Unpin host memory pinned by pin_memory_()
docstr_tok: ["Unpin","host","memory","pinned","by","pin_memory_","(",")"]
code: def unpin_memory_(self):
      """Unpin host memory pinned by pin_memory_()"""
      check_call(_LIB.DGLArrayUnpinData(self.handle))
  
imports: from __future__ import absolute_import
  import ctypes
  import sys
  import numpy
  from .base import _FFI_MODE, _LIB, c_array, c_str, check_call, string_types
  from .runtime_ctypes import dgl_shape_index_t, DGLArray, DGLArrayHandle, DGLContext, DGLDataType, TypeCode
label_desc: Use image node_id 16 for calling the NDArrayBase obj's underlying member method code with example usage: obj.unpin_memory_() without return types