pub fn parse_find_statement(

    find_statement: Node,

    source_code: &str,

    symbols: Option<SymbolTablePtr>,

) -> Result<BTreeMap<Name, DomainPtr>, EssenceParseError> {

    let mut vars = BTreeMap::new();

    let domain = find_statement

        .child_by_field_name("domain")

        .expect("No domain found in find statement");

    let domain = parse_domain(domain, source_code, symbols)?;

    let variable_list = find_statement

        .child_by_field_name("variables")

        .expect("No variable list found");

    for variable in named_children(&variable_list) {

        let variable_name = &source_code[variable.start_byte()..variable.end_byte()];

        vars.insert(Name::user(variable_name), domain.clone());

    }

    Ok(vars)

}