text: from dataclasses import dataclass
  
  
  @dataclass(frozen=True)
  class ImageData:
      """Contains image metadata.
  
      Attributes:
          width (int): Width expressed in `w_units`.
          height (int): Height expressed in `h_units`.
          extension (str): File extension, i.e. "png".
          mime_type (str): Mime type, i.e. "image/png".
          w_units (str): Measurement units for `width`. Defaults to "px".
          h_units (str): Measurement units for `height`. Defaults to "px".
      """
  
      width: int
      height: int
      extension: str
      mime_type: str
      w_units: str = "px"
      h_units: str = "px"
  