Please help me complete the safe value extraction (E Expression) logic for the `System Platform` object.

To ensure absolute correctness of the API and prevent null pointer panics, please refer to and strictly imitate the following **real `E` expression code example for `System Platform`**.

### Standard E Expression Example (Reference)
Please carefully observe how `E::platform(entity)` is used to chain safe `.get_xxx()` method calls down the relation graph, ending with `.eval()`.

```rust
use teaql_core::Entity;
use crm_erp_service_core::{E, System Platform};

pub fn extract_value_example(entity: &System Platform) -> Option<String> {
    // 1. Wrap the base entity in the E expression facade
    // Note: The module name is typically snake_case
    let value_opt = E::platform(entity)
        // --- Safe chainable getters (Uncomment and chain as needed) ---
        // .get_name()
        // .get_create_time()
        // .get_last_update_time()

        // --------------------------------------------------------------

        // 2. Safely evaluate the entire chain. If any relation in the middle was not loaded, this returns None instead of panicking.
        .eval();

    // The result is an Option wrapper of the target value.
    value_opt
}
```

### Your Task
Please completely imitate the framework, imports, and syntax features of the above code to implement the safe value extraction logic for `System Platform` based on my specific business needs. Please output the Rust source code directly.