presto-spi/src/main/java/io/prestosql/spi/connector/classloader/ClassLoaderSafeConnectorMetadata.java/ClassLoaderSafeConnectorMetadata/schemaExists
class ClassLoaderSafeConnectorMetadata:    @Override
    public boolean schemaExists(ConnectorSession session, String schemaName)
    {
        try (ThreadContextClassLoader ignored = new ThreadContextClassLoader(classLoader)) {
            return delegate.schemaExists(session, schemaName);
        }
    }