Issue/26506 Provides correct desciption in docstring that get_indexer methods are not yet supported
- [x] fixes docstring for #26506 until implementation is ready
- [x] 46585 tests passed - none added as documentation change only
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
```
$ git diff upstream/master -u -- "*.py" | flake8 --diff && echo yes
yes
```
- [x] whatsnew entry
Provides correct desciption in docstring that Interval.get_indexer using any method other than default are not yet supported

I followed the example from get_loc to adjust the documentation, I originally had created a template the each documentation strings used as a basis but was concerned how it would interact with the global documentation dictionary and how it was used. Let me know if you would like any changes. Oh wow - found the right way to do it in the Contributors guide my apologies for rushing into it without checking the great documentation - I will fix the PR to follow the recomendation in https://pandas-docs.github.io/pandas-docs-travis/development/contributing_docstring.html#sharing-docstrings
 # [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/26519?src=pr&el=h1) Report
> Merging [#26519](https://codecov.io/gh/pandas-dev/pandas/pull/26519?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/ba48fc4a033f11513fa2dd44c946e18b7bc27ad2?src=pr&el=desc) will **decrease** coverage by `<.01%`.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/26519/graphs/tree.svg?width=650&token=eZ4WkYLtcO&height=150&src=pr)](https://codecov.io/gh/pandas-dev/pandas/pull/26519?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master   #26519      +/-   ##
==========================================
- Coverage   91.75%   91.74%   -0.01%     
==========================================
  Files         174      174              
  Lines       50665    50664       -1     
==========================================
- Hits        46489    46484       -5     
- Misses       4176     4180       +4
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `90.26% <ø> (-0.01%)` | :arrow_down: |
| #single | `41.71% <ø> (-0.09%)` | :arrow_down: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/26519?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/core/indexes/interval.py](https://codecov.io/gh/pandas-dev/pandas/pull/26519/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvaW5kZXhlcy9pbnRlcnZhbC5weQ==) | `96.09% <ø> (-0.01%)` | :arrow_down: |
| [pandas/io/gbq.py](https://codecov.io/gh/pandas-dev/pandas/pull/26519/diff?src=pr&el=tree#diff-cGFuZGFzL2lvL2dicS5weQ==) | `78.94% <0%> (-10.53%)` | :arrow_down: |
| [pandas/core/frame.py](https://codecov.io/gh/pandas-dev/pandas/pull/26519/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvZnJhbWUucHk=) | `97% <0%> (-0.12%)` | :arrow_down: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/26519?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/26519?src=pr&el=footer). Last update [ba48fc4...b7fc1bd](https://codecov.io/gh/pandas-dev/pandas/pull/26519?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 # [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/26519?src=pr&el=h1) Report
> Merging [#26519](https://codecov.io/gh/pandas-dev/pandas/pull/26519?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/ba48fc4a033f11513fa2dd44c946e18b7bc27ad2?src=pr&el=desc) will **decrease** coverage by `50.06%`.
> The diff coverage is `12.5%`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/26519/graphs/tree.svg?width=650&token=eZ4WkYLtcO&height=150&src=pr)](https://codecov.io/gh/pandas-dev/pandas/pull/26519?src=pr&el=tree)

```diff
@@             Coverage Diff             @@
##           master   #26519       +/-   ##
===========================================
- Coverage   91.75%   41.69%   -50.07%     
===========================================
  Files         174      174               
  Lines       50665    50643       -22     
===========================================
- Hits        46489    21115    -25374     
- Misses       4176    29528    +25352
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `?` | |
| #single | `41.69% <12.5%> (-0.11%)` | :arrow_down: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/26519?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/core/indexes/base.py](https://codecov.io/gh/pandas-dev/pandas/pull/26519/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvaW5kZXhlcy9iYXNlLnB5) | `55.72% <ø> (-40.99%)` | :arrow_down: |
| [pandas/core/indexes/interval.py](https://codecov.io/gh/pandas-dev/pandas/pull/26519/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvaW5kZXhlcy9pbnRlcnZhbC5weQ==) | `34.54% <12.5%> (-61.57%)` | :arrow_down: |
| [pandas/io/formats/latex.py](https://codecov.io/gh/pandas-dev/pandas/pull/26519/diff?src=pr&el=tree#diff-cGFuZGFzL2lvL2Zvcm1hdHMvbGF0ZXgucHk=) | `0% <0%> (-100%)` | :arrow_down: |
| [pandas/io/sas/sas\_constants.py](https://codecov.io/gh/pandas-dev/pandas/pull/26519/diff?src=pr&el=tree#diff-cGFuZGFzL2lvL3Nhcy9zYXNfY29uc3RhbnRzLnB5) | `0% <0%> (-100%)` | :arrow_down: |
| [pandas/core/groupby/categorical.py](https://codecov.io/gh/pandas-dev/pandas/pull/26519/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvZ3JvdXBieS9jYXRlZ29yaWNhbC5weQ==) | `0% <0%> (-100%)` | :arrow_down: |
| [pandas/tseries/plotting.py](https://codecov.io/gh/pandas-dev/pandas/pull/26519/diff?src=pr&el=tree#diff-cGFuZGFzL3RzZXJpZXMvcGxvdHRpbmcucHk=) | `0% <0%> (-100%)` | :arrow_down: |
| [pandas/tseries/converter.py](https://codecov.io/gh/pandas-dev/pandas/pull/26519/diff?src=pr&el=tree#diff-cGFuZGFzL3RzZXJpZXMvY29udmVydGVyLnB5) | `0% <0%> (-100%)` | :arrow_down: |
| [pandas/io/formats/html.py](https://codecov.io/gh/pandas-dev/pandas/pull/26519/diff?src=pr&el=tree#diff-cGFuZGFzL2lvL2Zvcm1hdHMvaHRtbC5weQ==) | `0% <0%> (-99.37%)` | :arrow_down: |
| [pandas/io/sas/sas7bdat.py](https://codecov.io/gh/pandas-dev/pandas/pull/26519/diff?src=pr&el=tree#diff-cGFuZGFzL2lvL3Nhcy9zYXM3YmRhdC5weQ==) | `0% <0%> (-91.16%)` | :arrow_down: |
| [pandas/io/sas/sas\_xport.py](https://codecov.io/gh/pandas-dev/pandas/pull/26519/diff?src=pr&el=tree#diff-cGFuZGFzL2lvL3Nhcy9zYXNfeHBvcnQucHk=) | `0% <0%> (-90.1%)` | :arrow_down: |
| ... and [130 more](https://codecov.io/gh/pandas-dev/pandas/pull/26519/diff?src=pr&el=tree-more) | |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/26519?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/26519?src=pr&el=footer). Last update [ba48fc4...ae7470c](https://codecov.io/gh/pandas-dev/pandas/pull/26519?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 cc @jschendel  Thanks - good suggestion will do Thanks @WillAyd it was much easier - have modified it to append a raises section to the docstring as requested. Hello @timgates42! Thanks for updating this PR. We checked the lines you've touched for [PEP 8](https://www.python.org/dev/peps/pep-0008) issues, and found:





There are currently no PEP 8 issues detected in this Pull Request. Cheers! :beers: 

##### Comment last updated at 2019-05-28 22:40:21 UTC Ran into a complication with the plan as the Raises section must be before the Examples in the docstring so hopefully this Substitution technique is the appropriate answer. @timgates42 I think this looks generally good. Can you post a screenshot of the rendered HTML doc? > @timgates42 I think this looks generally good. Can you post a screenshot of the rendered HTML doc?

Sure @WillAyd here it is

![image](https://user-images.githubusercontent.com/47873678/58418690-d3b3c080-80cb-11e9-973f-d19bb7fdd123.png)
 The Raises section looks off with the asterisks - do you know why that is appearing?

Sent from my iPhone

> On May 27, 2019, at 5:08 AM, Tim Gates <notifications@github.com> wrote:
> 
> @timgates42 I think this looks generally good. Can you post a screenshot of the rendered HTML doc?
> 
> Sure @WillAyd here it is
> 
> 
> 
> —
> You are receiving this because you were mentioned.
> Reply to this email directly, view it on GitHub, or mute the thread.
 ahh, just noticed @WillAyd comment, can you update. Good catch - according to the sphinx documentation this comes out if you are missing a colon (which I am) - I’ll add and regenerate - I actually copied this from another spot in pandas so presumably that needs fixing too - will find it Oh interesting I found the function I copied rename_categories in pandas/core/arrays/categorical.py and the issue can be seen in the published doc http://pandas-docs.github.io/pandas-docs-travis/reference/api/pandas.CategoricalIndex.rename_categories.html?highlight=rename_categories#pandas.CategoricalIndex.rename_categories but the fix is not what I expected as pandas uses numpydoc a varient of sphinx doc and it looks like this raises syntax is common across pandas as is the strange asterisks sequence - http://pandas-docs.github.io/pandas-docs-travis/reference/api/pandas.api.types.union_categoricals.html?highlight=union_categoricals#pandas.api.types.union_categoricals I do get these warnings when producing the documentation which is the next lead to track down...
```
home/tgates/3rdparty/pandas/pandas/core/indexes/interval.py:docstring of pandas.IntervalIndex.get_indexer:54: WARNING: Inline strong start-string without end-string.
WARNING: toctree references unknown document 'reference/api/pandas.RangeIndex.start'
WARNING: toctree references unknown document 'reference/api/pandas.RangeIndex.stop'
WARNING: toctree references unknown document 'reference/api/pandas.RangeIndex.step'
WARNING: toctree references unknown document 'reference/api/pandas.Series.sparse'
``` Oh just spotted I had doubled up than and it was `any method other than than the default`, I'll fix it. > Given this is a pre-existing issue across the code base I'm OK with this PR as is and would take a follow up PR to fix the asterisks.

without checking explicitly, it may be related to #26058, there seem to be a few issues regarding formatting. The dev docs at http://pandas-docs.github.io/pandas-docs-travis are being built on Travis using Sphinx v2.0.1 Oh thanks for the heads up @simonjayhawkins I can confirm I built locally using sphinx v2.0.1 let me check 1.8.5 to see if it looks better. Rolling back to sphinx 1.8.5 didn't solve the issue, I'll continue investigation. I've setup a separate repo at https://github.com/timgates42/numpydoc-demo to run some testing of numpydoc to see if I can reproduce the issue. If I solve it then I'm happy to send another PR as its unrelated to the problem being addressed here. Let me know if anyone disagrees or wants a change to this PR otherwise assuming all is good please merge it if this is appropriate - Thanks. thanks @timgates42 

if you can create an issue for the astericks thing (you can just refer back to the comments here), and a PR to fix would be great!