[R] partial SS for anova

[NATALIA F TCHETCHERINA]

Hello,
I use  lme4 package.
library(lme4)
fit=lmer(y ~ time+dye+trt+trt:time + (1|rep), data=dataset, na.action='na.omit')
anova(fit)

The anova gives sequential F-tests and sequential SS.

My question is: how I can get partial F-tests and partial SS?
 For lm (not lmer)  
anova(lm(y~x+z))
we can use 
anova(fit, ssType=3)
but it is not work for lmer.

Natalia.