Function value_member_candidates 

pub fn value_member_candidates(
    ty: TyId,
    tys: &Types,
    doc_text: &str,
    files: Option<&HashMap<PathBuf, String>>,
) -> Vec<Completion>

The members of a typed value receiver: the built-in kernel methods of its type (from the enumerable registry) plus, for a record, its fields.