ImportableDataProvider (OpenDJ Server NG 4.4.12 API)

```
public interface ImportableDataProvider
```
A data provider which supports LDIF import functionality.
FIXME: the async APIs used below are a bad fit. We do not want to return an LdapException. We really need a more generic promises API.
FIXME: it would be nice if we can use EntryReader, however we may need to provide an optimized implementation for use in multi-threaded imports. E.g. performing DN checking as early as possible before doing schema validation.
FIXME: import allows you to append, merge, replace entries. Do we need to expose that here?

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`DataProviderID`	`getDataProviderID()`	Returns the ID of this data provider.
`org.forgerock.opendj.ldap.LdapPromise<Void>`	`importEntries(org.forgerock.opendj.ldif.EntryReader reader, org.forgerock.opendj.ldap.LdapResultHandler<Void> handler)`	Imports the contents of this data provider from the provided entry reader.

- Method Detail
  - getDataProviderID
```
DataProviderID getDataProviderID()
```
    Returns the ID of this data provider.
    
    Returns:
    
    The ID of this data provider.
  - importEntries
```
org.forgerock.opendj.ldap.LdapPromise<Void> importEntries(org.forgerock.opendj.ldif.EntryReader reader,
                                                          org.forgerock.opendj.ldap.LdapResultHandler<Void> handler)
```
    Imports the contents of this data provider from the provided entry reader.
    Note that the server will not explicitly initialize this data provider before calling this method.
    
    Parameters:
    
    reader - The entry reader.
    
    handler - A handler which will be notified when the import completes.
    
    Returns:
    
    A promise representing the completion of the import.