def send_membership(self, password, community, mstype):
'''
Send a membership document to a target community
:param str password: The account SigningKey password
:param community: The community target of the membership document
:param str mstype: The type of membership demand. "IN" to join, "OUT" to leave
'''
self_ = Person.lookup(self.pubkey, community)
selfcert = self_.selfcert(community)
blockid = community.current_blockid()
membership = Membership(PROTOCOL_VERSION, community.currency,
selfcert.pubkey, blockid['number'],
blockid['hash'], mstype, selfcert.uid,
selfcert.timestamp, None)
key = SigningKey(self.salt, password)
membership.sign([key])
logging.debug("Membership : {0}".format(membership.signed_raw()))
community.broadcast(bma.blockchain.Membership, {},
{'membership': membership.signed_raw()})
