Macro impl_link_entity 

macro_rules! impl_link_entity {
    (
        $type:ident,
        $type_name:expr,
        {
            $( $specific_field:ident : $specific_type:ty ),* $(,)?
        }
    ) => { ... };
}

Complete macro to create a Link entity with automatic trait implementations

Example

use this::prelude::*;

impl_link_entity!(
    UserCompanyLink,
    "user_company_link",
    {
        role: String,
        start_date: DateTime<Utc>,
    }
);

// Usage
let link = UserCompanyLink::new(
    "employment".to_string(),
    user_id,
    company_id,
    "active".to_string(),
    "Senior Developer".to_string(),
    Utc::now(),
);