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: dcl.rs
    path of file: ./repos/skytable/server/src/engine/ql
    
    the code of the file until where you have to start completion: /*
 * Created on Thu Sep 21 2023
 *
 * This file is a part of Skytable
 * Skytable (formerly known as TerrabaseDB or Skybase) is a free and open-source
 * NoSQL database written by Sayan Nandan ("the Author") with the
 * vision to provide flexibility in data modelling without compromising
 * on performance, queryability or scalability
    
    pub fn parse<Qd: QueryData<'a>>(state: &mut State<'a, Qd>) -> QueryResult<Self> {
        if state.cursor_has_ident_rounded() & (state.remaining() == 1) {
            let username = unsafe {
                // UNSAFE(@ohsayan): +boundck
                state.read().uck_read_ident()
            };
            state.cursor_ahead();
            return Ok(Self::new(username));
        }
        Err(QueryError::QLInvalidSyntax)
    }