The GetHash method in the ResourceGenerator class is responsible for generating a hash value that is used to determine if a resource has changed. This method is particularly useful when loading or saving resources, as it helps in identifying modifications.

By default, the method serializes the generator into a JSON string and computes the CRC64 hash of that string. This default behavior can be overridden in derived classes if there is a need to optimize the process or exclude certain elements from the hash calculation.

To use the GetHash method, simply call it on an instance of a class that derives from ResourceGenerator. If you have specific requirements for the hash calculation, consider overriding this method in your derived class.

Example usage:

public class MyResourceGenerator : ResourceGenerator
{
    public override ulong GetHash()
    {
        // Custom hash logic here
        return base.GetHash();
    }
}

MyResourceGenerator generator = new MyResourceGenerator();
ulong hash = generator.GetHash();