15  * A tuple: (ATN state, predicted alt, syntactic, semantic context).
16  * The syntactic context is a graph-structured stack node whose path(s)
18  * The semantic context is the tree of semantic predicates encountered
51     public $context;  variable in Antlr\\Antlr4\\Runtime\\Atn\\ATNConfig
54      * We cannot execute predicates dependent upon local context unless
55      * we know for sure we are in the correct context. Because there is
60      * closure() tracks the depth of how far we dip into the outer context:
83         ?PredictionContext $context = null,  argument
94             $this->context = $context;
99             $this->context = $context ?? $oldConfig->context;
144             && Equality::equals($this->context, $other->context);
152             $this->context,
165         if ($this->context !== null) {
166             $buf .= ',[' . $this->context . ']';
188             $this->context !== null ? ',[' . $this->context . ']' : '',