// Thrown the filter expressions into the general list to be placed.
// Add to keep the application order (original filter then additional exprs)
// Not important, but nice.
ExprList exprs2 = ExprList.copy(input.getExprs()) ;
exprs2.addAll(exprs);
return transform(exprs2, input.getSubOp()) ;
}
private Placement placeOrWrapBGP(ExprList exprs, OpBGP x) {
return placeOrWrapBGP(exprs, x.getPattern()) ;