def validate_min_itemsize(self, min_itemsize):
if min_itemsize is None:<EOL><INDENT>return<EOL><DEDENT>if not isinstance(min_itemsize, dict):<EOL><INDENT>return<EOL><DEDENT>q = self.queryables()<EOL>for k, v in min_itemsize.items():<EOL><INDENT>if k == '<STR_LIT>':<EOL><INDENT>continue<EOL><DEDENT>if k not in q:<EOL><INDENT>raise ValueError(<EOL>"<STR_LIT>"<EOL>"<STR_LIT>".format(key=k))<EOL><DEDENT><DEDENT>
validate the min_itemisze doesn't contain items that are not in the
        axes this needs data_columns to be defined