This member is added by an implicit conversion from WrappedProperties to
any2stringadd[WrappedProperties] performed by method any2stringadd in scala.Predef.
This member is added by an implicit conversion from WrappedProperties to
StringFormat[WrappedProperties] performed by method StringFormat in scala.Predef.
For placing a wrapper function around property functions. Motivated by places like google app engine throwing exceptions on property lookups.