code: @javax.annotation.Nonnull
    public com.simiacryptus.util.data.DensityTree setMinSplitFract(double minSplitFract) {
      this.minSplitFract = minSplitFract;
      return this;
    }
docs: Sets min split fract.
  
  @param minSplitFract the min split fract
  @return the min split fract