builder.basicSchemaIsComplete();
builder.createGroup("t1", "test");
builder.addTableToGroup("t1", "test", "t1");
builder.joinTables("t2/t1", "test", "t1", "test", "t2");
builder.joinColumns("t2/t1", "test", "t2", "c1", "test", "t2", "c2");
builder.addJoinToGroup("t1", "t2/t1", 0);
builder.groupingIsComplete();
return builder;
}
}