src/Eloquent/Typhoon/Generator/TyphaxASTGenerator.php
public function visitCallableType(CallableType $type)
    {
        $this->typeCheck->visitCallableType(func_get_args());

        $call = new Call(QualifiedIdentifier::fromString('\is_callable'));
        $call->add($this->valueExpression());

        return $call;
    }
public function visitCallableType(CallableType $type)
    {
        $this->typeCheck->visitCallableType(func_get_args());

        $call = new Call(QualifiedIdentifier::fromString('\is_callable'));
        $call->add($this->valueExpression());

        return $call;
    }
@param CallableType $type

@return Call