@internal

@param string $name

@return bool
346905
protected function flagExists(string $name): bool
    {
        $flags = $this->getFlags();

        return isset($flags[$name]);
    }
474526
public function __isset($name)
  {
    if (isset($this->_data[$name])) {
      $isset = true;
    } else {
      $isset = !is_null($this->getDefault($name));
    }
    return $isset;
  }
405667
public function hasExtra($name)
    {
        return isset($this->extras[$name]) || array_key_exists($name, $this->extras);
    }
1246982
public function hasHeader($name)
    {
        $internalName = strtolower($name);
        return (true === isset($this->headers[$internalName]));
    }
156718
public function hasMethod($name)
    {
        if ($name === $this->methodName) {
            return is_callable([$this, $name]);
        }

        return parent::hasMethod($name);
    }
388530
public function __isset( $name )
    {
        switch ( $name )
        {
            case 'boundary':
            case 'noMimeMessage':
                return isset( $this->properties[$name] );

            default:
                return parent::__isset( $name );
        }
    }
280560
public function __isset($name)
    {
        return 'parent' == $name ||
               'children' == $name ||
               in_array(strtolower($name), array_keys($this->properties));
    }
1226528
public function has($name)
    {
        if (! isset($this->instances[$name])) {
            return isset($this->registry[$name]);
        }

        return true;
    }
336908
public function __isset($name) {
        return isset($this->$name) ||
            ($getter = Toolkit::toCamelCase("get $name")) && method_exists($this, $getter);
    }
467892
public function hasProperty($name)
    {
        $result = false;
        if($entity = $this->getIterator()->current()) {
            $result = $entity->hasProperty($name);
        }

        return $result;
    }
626243
public function hasExtraConfiguration($name)
    {
        $name = $this->resolveString($name, __METHOD__);

        return isset($this->extraConfiguration[$name]);
    }
1334589
public static function has($name)
    {
        return (self::find()->where([self::getNameAttribute() => $name])->one()) ? true : false;
    }
961948
public function __isset($name)
    {
        $normalized = lcfirst($name);
        $property = "_{$normalized}";
        if (property_exists($this, $property)) {
            return true;
        }
        return false;
    }
559585
public function __isset(string $name): bool
    {
        return in_array($name, static::getInstanceProperties()) && $this->$name !== null;
    }
737791
public function __isset($name)
    {
        return isset($this->children[$name]) && !is_null($this->children[$name]->getValue());
    }
167097
public function has(string $name): bool
    {
        foreach ($this->elements as $element) {
            if ($element instanceof NamedInterface && $element->getName() == $name) {
                return true;
            }
        }

        return false;
    }
1076959
public function has(string $name): bool
    {
        $name = $this->getDefinitiveName($name);

        return isset($this->instances[$name]);
    }