How to use the b2.build.type.register_type function in b2

def register ():
    type.register_type('PREPROCESSED_C', ['i'], 'C')
    type.register_type('PREPROCESSED_CPP', ['ii'], 'CPP')

def register ():
    type.register_type('PREPROCESSED_C', ['i'], 'C')
    type.register_type('PREPROCESSED_CPP', ['ii'], 'CPP')

def register ():
    type.register_type('CPP', ['cpp', 'cxx', 'cc'])
    type.register_type('H', ['h'])
    type.register_type('HPP', ['hpp'], 'H')
    type.register_type('C', ['c'])

def register ():
    type.register_type('PREPROCESSED_C', ['i'], 'C')
    type.register_type('PREPROCESSED_CPP', ['ii'], 'CPP')

def register ():
    type.register_type ('HTML', ['html'])

def register ():
    type.register_type ('OBJ', ['obj'], None, ['NT', 'CYGWIN'])
    type.register_type ('OBJ', ['o'])

def register ():
    type.register_type('PREPROCESSED_C', ['i'], 'C')
    type.register_type('PREPROCESSED_CPP', ['ii'], 'CPP')

# Copyright David Abrahams 2004. Distributed under the Boost
# Software License, Version 1.0. (See accompanying
# file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
from b2.build import type as type_


type_.register_type('CPP', ['cpp', 'cxx', 'cc'])
type_.register_type('H', ['h'])
type_.register_type('HPP', ['hpp'], 'H')
type_.register_type('C', ['c'])

def register ():
    type.register_type ('EXE', ['exe'], None, ['NT', 'CYGWIN'])
    type.register_type ('EXE', [], None, [])

def register ():
    type.register_type('PREPROCESSED_C', ['i'], 'C')
    type.register_type('PREPROCESSED_CPP', ['ii'], 'CPP')