class_docstr: GenericFunc node reference. This represents a generic function
  that may be specialized for different targets. When this object is
  called, a specialization is chosen based on the current target.
  
  Note
  ----
  Do not construct an instance of this object, it should only ever be
  used as a return value from calling into C++.
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code: def __call__(self, *args):
      return _ffi_api.GenericFuncCallFunc(self, *args)
  
file_path: tvm/python/tvm/target/generic_func.py
imports: import tvm._ffi
  from tvm.runtime import Object
  from .target import Target
  from .None import _ffi_api
label_desc: Use image node_id 1 for calling the GenericFunc obj's underlying member method code with example usage: obj.__call__() and returns: _ffi_api