Merge pull request #75 from Su-Yong/master · LiuYunPlayer/TuneLab@02676be

'PropertyPath' defines operator == or operator != but does not override Object.Equals(object o)

'PropertyPath' defines operator == or operator != but does not override Object.GetHashCode()

Possible null reference assignment.

'Head' defines operator == or operator != but does not override Object.Equals(object o)

'Head' defines operator == or operator != but does not override Object.GetHashCode()

Unreachable code detected

Non-nullable property 'Element' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

'Head' defines operator == or operator != but does not override Object.Equals(object o)

'Head' defines operator == or operator != but does not override Object.GetHashCode()

'PropertyPath' defines operator == or operator != but does not override Object.Equals(object o)

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