code: def is_available():
      """Check whether NNPACK is available, that is, `nnp_initialize()`
      returns `nnp_status_success`.
      """
      return _initialize() == 0
  
file_path: tvm/python/tvm/contrib/nnpack.py
imports: import tvm
  from tvm import te
  import tvm._ffi
label_desc: Use image node_id 1 for calling a global function with example usage: is_available() and returns: unknown