private static final int GROUP_METHOD_NAME = 1;
private static final int GROUP_METHOD_PARAMS = 2;
private static final int GROUP_METHOD_IDX = 3;
private static final int GROUP_CLASS = 4;
final Filter filter;
<BUG>public DataProviderFilter(Filter filter) {
if (filter == null) {
throw new NullPointerException("supplied filter must not be null");
}
this.filter = filter;</BUG>
}

private static final int GROUP_METHOD_NAME = 1;
private static final int GROUP_METHOD_PARAMS = 2;
private static final int GROUP_METHOD_IDX = 3;
private static final int GROUP_CLASS = 4;
final Filter filter;
public DataProviderFilter(Filter filter) {
this.filter = checkNotNull(filter, "supplied filter must not be null");
}
