## Structs
### EscPosBuilder
Fields:
- content: Vec
- max_width: u16
### Document
Fields:
- children: Vec
### Heading
Fields:
- value: String
### Text
Fields:
- style: Option
- value: String
### Img
Fields:
- src: String
- orientation: Option
### Qr
Fields:
- size: Option
- ecc: Option
- value: String
### Barcode
Fields:
- height: Option
- mod_width: Option
- text_position: Option
- bar_type: Option
- value: String
### Feed
Fields:
- amount: Option