An annotation for the schema loading. One can list the schema to be loaded,
and if they must be enabled or disabled.
We can only load new schemas, not unload existing ones.However, we
can disable a schema that has been previously loaded : loading a
schema that is already loaded will just apply the enabled flag on
this schema
Note that a schema may be loaded and disabled.
Some schema are automatically loaded, and there is no way they can be disabled :
Here is an exemple :
@Schemas( {
@LoadSchema( name = "nis", enabled="TRUE" ),
@LoadSchema( name = "posix", enabled="FALSE" ),
})
)