parameters: (self, className, sequence)
docstring: Unbind for a all widgets with bindtag CLASSNAME for event SEQUENCE
          all functions.
docstring_summary: Unbind for a all widgets with bindtag CLASSNAME for event SEQUENCE
          all functions.
docstring_tokens: Unbind for a all widgets with bindtag CLASSNAME for event SEQUENCE all functions .
function: def unbind_class(self, className, sequence):
          """Unbind for a all widgets with bindtag CLASSNAME for event SEQUENCE
          all functions."""
          self.tk.call('bind', className , sequence, '')
function_tokens: def unbind_class ( self , className , sequence ) : self . tk . call ( 'bind' , className , sequence , '' )