'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 usage:
>>> 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.'

def get_internals(self):

    handle = SymbolHandle()
    check_call(_LIB.MXSymbolGetInternals(self.handle, ctypes.byref(handle)))
    return Symbol(handle=handle)
