A lot of these things are already in core docs isnt it? Try only to document the locale specific

@pimjansen Not really:

• floorNumber, apartmentNumber, streetNumber, blockNumber and streetPrefix are only available in this locale
• nric, fin and singaporeId are Singapore-specific
• internationalCodePrefix, voipNumber, premiumPhoneNumber are added by this locale
• tollFreeInternationalNumber and tollFreeLineNumber are different from en_US's tollFreeNumber
• mobileNumber and fixedLineNumber are different from en_US's phoneNumber which is choosing one of them in en_SG case.

Basically most of these methods are added because it is possible to distinguish between mobile and landline numbers in Singapore.

EnUS is also not core, see the root providers

@pimjansen The documentation is always using en_US for these examples.
There is currently no documentation for root Address, PhoneNumber and Person providers in docs/formatters directory.

Couldn't find any providers that have public *Prefix (or *Suffix) methods that are documented (except for a couple in en_US and in ro_RO/Person), even though there are a lot that use prefixes/suffixes.

If we document streetPrefix here we should probably document all *Prefix/*Suffix methods (that are not in the root providers), which would make things a bit noisy.

@krsriq Thank you for your suggestion. I've removed non-important methods documentation and left only blockNumber for address.