@NotNull
private static ColumnInfo[] cols(int cols) {
ColumnInfo<UsageNode, UsageNode> o =
new ColumnInfo<UsageNode, UsageNode>("") {
@Nullable
@Override
public UsageNode valueOf(UsageNode node) {
return node;
}
};
List<ColumnInfo<UsageNode, UsageNode>> list = Collections.nCopies(cols, o);
return list.toArray(new ColumnInfo[list.size()]);
}
