/// <summary>Serves as the default hash function.</summary>
/// <returns>A hash code for the current object.</returns>
public override int GetHashCode()
{
return(Requirements.Aggregate(0, (current, obj) =>
{
unchecked
{
var hashCode = current;
hashCode = (hashCode * 397) ^ (obj.Key?.GetHashCode() ?? 0);
hashCode = (hashCode * 397) ^ (obj.Value != null ? obj.Value.GetHashCode() : 0);
return hashCode;
}
}));
}