modify_contact

Description:

public async bool modify_contact (Contact contact, BookOperationFlags opflags, Cancellable? cancellable) throws Error

Applies the changes made to contact to the stored version in this.

The call is finished by modify_contact.end from the callback.

this	an BookClient
contact	an Contact
opflags	bit-or of BookOperationFlags
cancellable	a Cancellable; can be `null`
callback	callback to call when a result is ready
user_data	user data for the `callback`