Dumplie\Metadata\Metadata::isValid PHP Method

    public function isValid(TypeSchema $definition) : bool
    {
        if (mb_strtolower($definition->name()) !== mb_strtolower($this->typeSchemaName())) {
            throw InvalidArgumentException::unexpectedModel($definition->name(), $this->typeSchemaName());
        }
        foreach ($this->fields as $fieldName => $value) {
            $field = $definition->getFieldDefinition($fieldName);
            if (!$field->isValid($value)) {
                return false;
            }
        }
        return true;
    }