code: def _(expr):
      ret = []
      for p, getter in _old_assump_getters.items():
          pred = p(expr)
          prop = getter(expr)
          if prop is not None:
              ret.append(Equivalent(pred, prop))
      return ret
  
imports: from collections import defaultdict
  from sympy.assumptions.ask import Q
  from sympy.core import Add, Mul, Pow, Number, NumberSymbol, Symbol
  from sympy.core.numbers import ImaginaryUnit
  from sympy.functions.elementary.complexes import Abs
  from sympy.logic.boolalg import Equivalent, And, Or, Implies
  from sympy.matrices.expressions import MatMul
label_desc: Use image node_id 14 for calling a global function with example usage: _(expr) and returns: ret