def get_dimension(self, key, value, **kwargs):
return self._get_object_by_name(self._DIMENSION_ENDPOINT_SUFFIX,<EOL>'<STR_LIT>'.format(key, value),<EOL>**kwargs)<EOL>
get a dimension by key and value

Args:
    key (string): key of the dimension
    value (string): value of the dimension

Returns:
    dictionary of response