@Substitution(name='<STR_LIT>')<EOL><INDENT>@Appender(_common_see_also)<EOL>def ohlc(self):<DEDENT>
return self._apply_to_column_groupbys(<EOL>lambda x: x._cython_agg_general('<STR_LIT>'))<EOL>
Compute sum of values, excluding missing values.

For multiple groupings, the result index will be a MultiIndex