This routine exists to FORCE TREE SHAKING of the icon fonts that may not be referenced
at all within the application. This is required because the this package
have 7 font varieties and it is very likely only one will be used.
Tree shaking DOES NOT OCCUR for fonts that are never referenced, so having this
method FORCES a reference to the fonts - and invokes tree shaking for
each of the three fonts.
(Tree shaking occurs when a const declaration to an IconData() class occurs.)
