src/org/kocakosm/pitaya/util/Joiner.java
public Joiner replaceNullWith(String forNull)
	{
		return new Joiner(separator, prefix, suffix, trim, false,
			ignoreEmpty, forNull, forEmpty);
	}
public Joiner replaceNullWith(String forNull)
	{
		return new Joiner(separator, prefix, suffix, trim, false,
			ignoreEmpty, forNull, forEmpty);
	}
Returns a new {@code Joiner} that will behave as this one except that
it will replace {@code null} input values with the specified
{@code String}.

@param forNull the {@code String} to use for {@code null}s.

@return a new {@code Joiner} with the desired configuration.

@throws NullPointerException if {@code forNull} is {@code null}.