Allow to dispatch getting documentation on objects. (#13975)...
Allow to dispatch getting documentation on objects. (#13975)
Base for
#13860, so that object can be queried for documentation on
their fields/properties.
Typically this allows the following, to extend the doc documentation
when requesting information on a field.
```python
class DictLike:
def __getitem__(self, k):
if k.startswith('f'):
return "documentation for k"
else:
raise KeyError
class Bar:
__custom_documentations__ = DictLike()
faz = 1
@property
def foo(self):
return 1
b = Bar()
b.faz?
```
