Guarantee unique myUID in SemanticNode.
Guarantee unique myUID in SemanticNode.

http://bruceeckel.github.io/2017/01/13/constructors-are-not-thread-safe/

[Bug][TLC]
lemmy/tlaplus,tlaplus/tlaplus,tlaplus/tlaplus,tlaplus/tlaplus,lemmy/tlaplus,lemmy/tlaplus,lemmy/tlaplus,tlaplus/tlaplus