2.2.8 METADATA_MASTER_ROOT_HANDLE
This predefined handle points to the root of the configuration storage tree. It is treated as a valid handle for operations that require a METADATA_HANDLE opened with the METADATA_PERMISSION_READ bit flag specified in section 3.1.4.2. It is represented by a null handle and declared in the following way.
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#define METADATA_MASTER_ROOT_HANDLE 0