code: def inject_method(self, func, name=None):
      
      # TODO: if func is a bound method we should probably unbind it
      new_method = func.__get__(self, self.__class__)
      if name is None:
          name = func.__name__
      setattr(self, name, new_method)
docs: Injects a function into an object instance as a bound method
  
      The main use case of this function is for monkey patching. While monkey
      patching is sometimes necessary it should generally be avoided. Thus, we
      simply remind the developer that there might be a better way.
  
      Args:
          self (object): instance to inject a function into
          func (func): the function to inject (must contain an arg for self)
          name (str): name of the method. optional. If not specified the name
              of the function is used.
  
      Example:
          >>> class Foo(object):
          >>>     def bar(self):
          >>>         return 'bar'
          >>> def baz(self):
          >>>     return 'baz'
          >>> self = Foo()
          >>> assert self.bar() == 'bar'
          >>> assert not hasattr(self, 'baz')
          >>> inject_method(self, baz)
          >>> assert not hasattr(Foo, 'baz'), 'should only change one instance'
          >>> assert self.baz() == 'baz'
          >>> inject_method(self, baz, 'bar')
          >>> assert self.bar() == 'baz'