[Issue 15853] [std.random] save method must be immutable

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=15853

--- Comment #1 from Stepan Rogonov <rogonovste...@gmail.com> ---
Possible solution(IMHO):

@property typeof(this) save() @safe pure nothrow immutable
{
    return this;
}

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