code: def _scalar_mul(self, x, a):
      return x * a
  
imports: from itertools import count
  from functools import reduce
  from .tracer import trace, primitive, toposort, Node, Box, isbox, getval
  from .util import func, subval
  import warnings
label_desc: Use image node_id 13 for calling the VSpace obj's underlying member method code with example usage: obj._scalar_mul(x, a) and returns: unknown