You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: declaration_or_rule_list_block.rs
    path of file: ./repos/biome/crates/biome_css_parser/src/syntax/block
    
    the code of the file until where you have to start completion: use crate::parser::CssParser;
use crate::syntax::at_rule::{is_at_at_rule, parse_at_rule};
use crate::synta
    
    fn parse_element(&mut self, p: &mut Self::Parser<'_>) -> ParsedSyntax {
        if is_at_at_rule(p) {
            parse_at_rule(p)
        } else if is_at_declaration(p) {
            parse_declaration_with_semicolon(p)
        } else if is_at_nested_qualified_rule(p) {
            parse_nested_qualified_rule(p)
        } else {
            Absent
        }
    }