@Override public String getHeaderField(final String field) { final List<String> values = headers.get(field); final StringBuilder sb = new StringBuilder(); for (final String v : values) sb.append(v).append(';'); return sb.substring(0, sb.length() - 1); }
@Override public String toString() { final StringBuilder sb = new StringBuilder(); for (final Expr e : preds) sb.append('[').append(e).append(']'); return sb.toString(); }