def to_post_request_information(self,body: PhoneAuthenticationMethod, request_configuration: Optional[RequestConfiguration[QueryParameters]] = None) -> RequestInformation:
        """
        Add a new phone authentication method for a user. A user may only have one phone of each type, captured in the phoneType property. This means, for example, adding a mobile phone to a user with a pre-existing mobile phone fails. Additionally, a user must always have a mobile phone before adding an alternateMobile phone. Adding a phone number makes it available for use in both Azure multi-factor authentication (MFA) and self-service password reset (SSPR), if enabled. Additionally, if a user is enabled by policy to use SMS sign-in and a mobile number is added, the system attempts to register the number for use in that system.
        param body: The request body
        param request_configuration: Configuration for the request such as headers, query parameters, and middleware options.
        Returns: RequestInformation
        """
        if body is None:
            raise TypeError("body cannot be null.")
        request_info = RequestInformation(Method.POST, self.url_template, self.path_parameters)
        request_info.configure(request_configuration)
        request_info.headers.try_add("Accept", "application/json")
        request_info.set_content_from_parsable(self.request_adapter, "application/json", body)
        return request_info

        Add a new phone authentication method for a user. A user may only have one phone of each type, captured in the phoneType property. This means, for example, adding a mobile phone to a user with a pre-existing mobile phone fails. Additionally, a user must always have a mobile phone before adding an alternateMobile phone. Adding a phone number makes it available for use in both Azure multi-factor authentication (MFA) and self-service password reset (SSPR), if enabled. Additionally, if a user is enabled by policy to use SMS sign-in and a mobile number is added, the system attempts to register the number for use in that system.
        param body: The request body
        param request_configuration: Configuration for the request such as headers, query parameters, and middleware options.
        Returns: RequestInformation
        
msgraph/generated/users/item/authentication/phone_methods/phone_methods_request_builder.py