H5I_CLEAR_TYPE deletes all identifiers of the type identified by the argument
The identifier type’s free function is first called on all of these identifiers to free their memory, then they are removed from the type.
force flag is set to false, only those identifiers whose reference counts are equal to 1 will be deleted, and all other identifiers will be entirely unchanged. If the
force flag is true, all identifiers of this type will be deleted.