Returns the localized resource of the given key and locale, or null
if no localized resource is available.
@param key the key of the localized resource, not null
@param locale the locale, not null
@return the localized resource, or null if not available
@throws NullPointerException if key or locale is null
Returns the localized resource of the given key and locale, or null if no localized resource is available.
@param key the key of the localized resource, not null @param locale the locale, not null @return the localized resource, or null if not available @throws NullPointerException if key or locale is null