Resolution docstring
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```
################################################################################
################### Docstring (pandas.Timedelta.resolution)  ###################
################################################################################

Return a string representing the lowest (i.e. smallest) time resolution.

Each timedelta has a defined resolution that represents the lowest OR
most granular level of precision. Each level of resolution is
represented by a short string as defined below:

============ ============
Resolution   Return value
============ ============
Days         ``'D'``
Hours        ``'H'``
Minutes      ``'T'``
Seconds      ``'S'``
Milliseconds ``'L'``
Microseconds ``'U'``
Nanoseconds  ``'N'``
============ ============

Returns
-------
str
    Time resolution.

Examples
--------
**Using string input**

>>> td = pd.Timedelta('1 days 2 min 3 us 42 ns')
>>> td.resolution
'N'

>>> td = pd.Timedelta('1 days 2 min 3 us')
>>> td.resolution
'U'

>>> td = pd.Timedelta('2 min 3 s')
>>> td.resolution
'S'

**Using integer input**

>>> td = pd.Timedelta(36, unit='us')
>>> td.resolution
'U'

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################################## Validation ##################################
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Errors found:
	See Also section not found
```