StateManager: refactor operate for easy chaining with get
StateManager: refactor operate for easy chaining with get

KraigWalker/framework,woltemade/framework,woltemade/framework,SvitlanaShepitsena/framework,Famous/framework,KraigWalker/framework,SvitlanaShepitsena/shakou,SvitlanaShepitsena/shakou,SvitlanaShepitsena/framework,infamous/famous-framework,SvitlanaShepitsena/framework-1,SvitlanaShepitsena/remax-banner,ildarsamit/framework,tbossert/framework,Famous/framework,colllin/famous-framework,infamous/framework,jeremykenedy/framework,ildarsamit/framework,infamous/framework,jeremykenedy/framework,SvitlanaShepitsena/framework-1,SvitlanaShepitsena/remax-banner,colllin/famous-framework,infamous/famous-framework,tbossert/framework