code: def get_internals(self):
          
          handle = SymbolHandle()
          check_call(_LIB.MXSymbolGetInternals(
              self.handle, ctypes.byref(handle)))
          return Symbol(handle=handle)
docs: Gets a new grouped symbol `sgroup`. The output of `sgroup` is a list of
          outputs of all of the internal nodes.
  
          Consider the following code:
  
          Example
          -------
          >>> a = mx.sym.var('a')
          >>> b = mx.sym.var('b')
          >>> c = a + b
          >>> d = c.get_internals()
          >>> d
          <Symbol Grouped>
          >>> d.list_outputs()
          ['a', 'b', '_plus4_output']
  
          Returns
          -------
          sgroup : Symbol
              A symbol group containing all internal and leaf nodes of the computation graph
              used to compute the symbol.