public TextLayoutBuilder setMinEms(int minEms) {
    mMinWidth = minEms;
    mMinWidthMode = EMS;
    return this;
  }
Sets the min width expressed in ems.

@param minEms min width expressed in ems
@return This {@link TextLayoutBuilder} instance
@see #setMaxEms(int)
@see #setMinWidth(int)
library/src/main/java/com/facebook/fbui/textlayoutbuilder/TextLayoutBuilder.java