Phan\Analysis\ConditionVisitor::visitIsset PHP Method

    public function visitIsset(Node $node) : Context
    {
        return $this->context;
        /*
        // Only look at things of the form
        // `isset($variable)`
        if ($node->children['var']->kind !== \ast\AST_VAR) {
            return $this->context;
        }
        
        try {
            // Get the variable we're operating on
            $variable = (new ContextNode(
                $this->code_base,
                $this->context,
                $node->children['var']
            ))->getVariable();
        
            $v0 = $variable;
        
            // Make a copy of the variable
            $variable = clone($variable);
        
            // Remove null from the list of possible types
            // given that we know that the variable is
            // set
            $variable->getUnionType()->removeType(
                NullType::instance()
            );
        
            // Overwrite the variable with its new type
            $this->context->addScopeVariable(
                $variable
            );
        } catch (\Exception $exception) {
            // Swallow it
        }
        
        return $this->context;
        */
    }