def __init__(self, default_namespace=None, names=None):
        """Initializes a new name tracker.

        Args:
          default_namespace: Optional default namespace.
          names: Optional initial mapping of known named schemas.
        """
        if names is None:
            names = {}
        self._names = names
        self._default_namespace = default_namespace
Initializes a new name tracker.

        Args:
          default_namespace: Optional default namespace.
          names: Optional initial mapping of known named schemas.
        
Solutions/CyberArkAudit/Data Connectors/.python_packages/lib/site-packages/azure/storage/blob/_shared/avro/schema.py