#[cfg(test)]
#[path = "./pckg_test.rs"]
mod pckg_test;
pub(crate) fn concat(parent: &str, current: &str) -> String {
let mut package = String::from(parent);
if !parent.is_empty() && !current.is_empty() {
package.push_str("::");
}
package.push_str(current);
package
}