public SELF ndots(int ndots) {
        checkArgument(ndots >= 0, "ndots: %s (expected: >= 0)", ndots);
        this.ndots = ndots;
        return self();
    }
Sets the number of dots which must appear in a name before an initial absolute query is made.
core/src/main/java/com/linecorp/armeria/client/AbstractDnsResolverBuilder.java