code: def parent(self):
      """Get the domain associated with ``self``
  
      Examples
      ========
  
      >>> from sympy import ZZ, symbols
      >>> x, y = symbols('x, y')
      >>> K = ZZ[x,y]
      >>> p = K(x)**2 + K(y)**2
      >>> p
      x**2 + y**2
      >>> p.parent()
      ZZ[x,y]
  
      Notes
      =====
  
      This is used by :py:meth:`~.Domain.convert` to identify the domain
      associated with a domain element.
      """
      raise NotImplementedError("abstract method")
  
label_desc: Use image node_id 1 for calling the DomainElement obj's underlying member method code with example usage: obj.parent() without return types