Name: H5Lunregister
Signature:
  herr_t `H5Lunregister`( H5L_type_t `link_cls_id` )

Purpose:
  Unregisters a class of user-defined links.

Description:
  `H5Lunregister` unregisters a class of user-defined links, preventing them from being traversed, queried, moved, etc.

  A link class can be re-registered using `H5Lregister`.

Parameters:

  H5L_type_t `link_cls_id` | IN: User-defined link class identifier

Returns:
  Returns a non-negative value if successful; otherwise returns a negative value.

Fortran90 Interface:
  None.

History:

  Release | C
  1.8.0 | Function introduced in this release.