code: public function visitFloatType(FloatType $type)
      {
          $this->typeCheck->visitFloatType(func_get_args());
  
          $call = new Call(QualifiedIdentifier::fromString('\is_float'));
          $call->add($this->valueExpression());
  
          return $call;
      }
docs: @param FloatType $type
  
  @return Call