class_docstr: Representation of a rectangular area in a 2D coordinate system.
  
  Parameters
  ----------
  *args : arguments
      Can be in the form `Rect(x, y, w, h)`, `Rect(pos, size)`, or
      `Rect(Rect)`.
code: def center(self, value):
      delta_x = value[0] - self.center[0]
      delta_y = value[1] - self.center[1]
      self.pos = (self.pos[0] + delta_x, self.pos[1] + delta_y)
  
imports: import numpy
label_desc: Use image node_id 19 for calling the Rect obj's underlying member method code with example usage: obj.center(value) without return types