CREATE OPERATOR CLASS $name$ [ DEFAULT ] FOR TYPE $data_type$
    USING $index_method$ [ FAMILY $family_name$ ] AS
    { OPERATOR $strategy_number$ $operator_name$ [ ( $op_type$, $op_type$ ) ] [ FOR SEARCH | FOR ORDER BY $sort_family_name$ ]
    | FUNCTION $support_number$ [ ( $op_type$ [ , $op_type$ ] ) ] $function_name$ ( $argument_type$ [ , ... ] )
    | STORAGE $storage_type$
    } [ , ... ]
