fab Option Closing Animation Duration Ms
The duration (in milliseconds as a positive long) of the closing animations for ALL the FabOptions inside of this ExpandableFabLayout. A convenience method so that clients don't have to set the same value for every FabOption within a single ExpandableFabLayout.
Set to 0L if you don't want closing animations for ANY FabOptions within this ExpandableFabLayout.
NOTE: This property will override whatever you set on individual FabOptions. If you only want to change the closing animation duration for a single FabOption, leave this property as null and see FabOption.closingAnimationDurationMs.