in library/src/main/java/com/facebook/fbui/textlayoutbuilder/TextLayoutBuilder.java [974:981]
public TextLayoutBuilder setDensity(float density) {
if (mParams.paint.density != density) {
mParams.createNewPaintIfNeeded();
mParams.paint.density = density;
mSavedLayout = null;
}
return this;
}