Webmozart\Json\JsonValidator::loadSchema PHP Method

    private function loadSchema($file)
    {
        // Retrieve schema and cache in UriRetriever
        $file = Path::canonicalize($file);
        // Add file:// scheme if necessary
        if (false === strpos($file, '://')) {
            $file = 'file://' . $file;
        }
        // Resolve references to other schemas
        try {
            $schema = $this->resolver->resolve($file);
        } catch (ResourceNotFoundException $e) {
            throw new InvalidSchemaException(sprintf('The schema %s does not exist.', $file), 0, $e);
        }
        try {
            $this->assertSchemaValid($schema);
        } catch (InvalidSchemaException $e) {
            throw new InvalidSchemaException(sprintf('An error occurred while loading the schema %s: %s', $file, $e->getMessage()), 0, $e);
        }
        return $schema;
    }