class_docstr: Apply an operation to a list of tensors efficiently.
  
  Args:
      chunk_size (int): Size of a chunk.
class_docstr_tok: ["Apply","an","operation","to","a","list","of","tensors","efficiently",".","Args",":","chunk_size","(","int",")",":","Size","of","a","chunk","."]
code: def check_avail(self):
      if not MultiTensorApply.available:
          raise RuntimeError(
              "Attempted to call MultiTensorApply method, but MultiTensorApply "
              "is not available, possibly because Apex was installed without "
              "--cpp_ext --cuda_ext.  Original import error message:",
              MultiTensorApply.import_err,
          )
  
label_desc: Use image node_id 2 for calling the MultiTensorApply obj's underlying member method code with example usage: obj.check_avail() without return types