Struct Message 

pub struct Message {

    pub _message_id: i32,
    pub _from: Option<User>,
    pub _date: i32,
    pub _chat: Chat,
    pub _forward_from: Option<User>,
    pub _forward_from_chat: Option<Chat>,
    pub _forward_from_message_id: Option<i32>,
    pub _forward_signature: Option<String>,
    pub _forward_date: Option<i32>,
    pub _reply_to_message: Option<Box<Message>>,
    pub _edit_date: Option<i32>,
    pub _author_signature: Option<String>,
    pub _text: Option<String>,
    pub _entities: Option<Vec<MessageEntity>>,
    pub _audio: Option<Audio>,
    pub _document: Option<Document>,
    pub _game: Option<Game>,
    pub _photo: Option<Vec<PhotoSize>>,
    pub _sticker: Option<Sticker>,
    pub _video: Option<Video>,
    pub _voice: Option<Voice>,
    pub _video_note: Option<VideoNote>,
    pub _caption: Option<String>,
    pub _contact: Option<Contact>,
    pub _location: Option<Location>,
    pub _venue: Option<Venue>,
    pub _new_chat_members: Option<Vec<User>>,
    pub _left_chat_member: Option<User>,
    pub _new_chat_title: Option<String>,
    pub _new_chat_photo: Option<Vec<PhotoSize>>,
    pub _delete_chat_photo: Option<bool>,
    pub _group_chat_created: Option<bool>,
    pub _supergroup_chat_created: Option<bool>,
    pub _channel_chat_created: Option<bool>,
    pub _migrate_to_chat_id: Option<i32>,
    pub _migrate_from_chat_id: Option<i32>,
    pub _pinned_message: Option<Box<Message>>,
    pub _invoice: Option<Invoice>,
    pub _successful_payment: Option<SuccessfulPayment>,
}

This object represents a message.

Fields

_message_id: i32

Unique message identifier inside this chat

_from: Option<User>

Optional. Sender, empty for messages sent to channels

_date: i32

Date the message was sent in Unix time

_chat: Chat

Conversation the message belongs to

_forward_from: Option<User>

Optional. For forwarded messages, sender of the original message

_forward_from_chat: Option<Chat>

Optional. For messages forwarded from channels, information about the original channel

_forward_from_message_id: Option<i32>

Optional. For messages forwarded from channels, identifier of the original message in the channel

_forward_signature: Option<String>

Optional. For messages forwarded from channels, signature of the post author if present

_forward_date: Option<i32>

Optional. For forwarded messages, date the original message was sent in Unix time

_reply_to_message: Option<Box<Message>>

Optional. For replies, the original message. Note that the Message object in this field will not contain further reply_to_message fields even if it itself is a reply.

_edit_date: Option<i32>

Optional. Date the message was last edited in Unix time

_author_signature: Option<String>

Optional. Signature of the post author for messages in channels

_text: Option<String>

Optional. For text messages, the actual UTF-8 text of the message, 0-4096 characters.

_entities: Option<Vec<MessageEntity>>

Optional. For text messages, special entities like usernames, URLs, bot commands, etc. that appear in the text

_audio: Option<Audio>

Optional. Message is an audio file, information about the file

_document: Option<Document>

Optional. Message is a general file, information about the file

_game: Option<Game>

Optional. Message is a game, information about the game.

_photo: Option<Vec<PhotoSize>>

Optional. Message is a photo, available sizes of the photo

_sticker: Option<Sticker>

Optional. Message is a sticker, information about the sticker

_video: Option<Video>

Optional. Message is a video, information about the video

_voice: Option<Voice>

Optional. Message is a voice message, information about the file

_video_note: Option<VideoNote>

Optional. Message is a video note, information about the video message

_caption: Option<String>

Optional. Caption for the document, photo or video, 0-200 characters

_contact: Option<Contact>

Optional. Message is a shared contact, information about the contact

_location: Option<Location>

Optional. Message is a shared location, information about the location

_venue: Option<Venue>

Optional. Message is a venue, information about the venue

_new_chat_members: Option<Vec<User>>

Optional. New members that were added to the group or supergroup and information about them (the bot itself may be one of these members)

_left_chat_member: Option<User>

Optional. A member was removed from the group, information about them (this member may be the bot itself)

_new_chat_title: Option<String>

Optional. A chat title was changed to this value

_new_chat_photo: Option<Vec<PhotoSize>>

Optional. A chat photo was change to this value

_delete_chat_photo: Option<bool>

Optional. Service message: the chat photo was deleted

_group_chat_created: Option<bool>

Optional. Service message: the group has been created

_supergroup_chat_created: Option<bool>

Optional. Service message: the supergroup has been created. This field can‘t be received in a message coming through updates, because bot can’t be a member of a supergroup when it is created. It can only be found in reply_to_message if someone replies to a very first message in a directly created supergroup.

_channel_chat_created: Option<bool>

Optional. Service message: the channel has been created. This field can‘t be received in a message coming through updates, because bot can’t be a member of a channel when it is created. It can only be found in reply_to_message if someone replies to a very first message in a channel.

_migrate_to_chat_id: Option<i32>

Optional. The group has been migrated to a supergroup with the specified identifier. This number may be greater than 32 bits and some programming languages may have difficulty/silent defects in interpreting it. But it is smaller than 52 bits, so a signed 64 bit integer or double-precision float type are safe for storing this identifier.

_migrate_from_chat_id: Option<i32>

Optional. The supergroup has been migrated from a group with the specified identifier. This number may be greater than 32 bits and some programming languages may have difficulty/silent defects in interpreting it. But it is smaller than 52 bits, so a signed 64 bit integer or double-precision float type are safe for storing this identifier.

_pinned_message: Option<Box<Message>>

Optional. Specified message was pinned. Note that the Message object in this field will not contain further reply_to_message fields even if it is itself a reply.

_invoice: Option<Invoice>

Optional. Message is an invoice for a payment, information about the invoice. More about payments »

_successful_payment: Option<SuccessfulPayment>

Optional. Message is a service message about a successful payment, information about the payment. More about payments