code: def fill_from(self, b):
      if b.v is not None:
          self.v = b.v
      if b.v_min is not None:
          self.v_min = b.v_min
      if b.v_max is not None:
          self.v_max = b.v_max
      if b.v_steps is not None:
          self.v_steps = b.v_steps
  
imports: from sympy.core.singleton import S
  from sympy.core.symbol import Symbol
  from sympy.core.sympify import sympify
  from sympy.core.numbers import Integer
label_desc: Use image node_id 12 for calling the PlotInterval obj's underlying member method code with example usage: obj.fill_from(b) without return types