docs: def _get_form_defaults(self):
          """Returns default values for the get image form"""
  
          return {
              'response_format': 'html',
              'bbox': self.service.full_extent,
              'size': '400,400',
              'dpi': 200,
              'image_projection': pyproj.Proj(str(self.service.projection)),
              'bbox_projection': pyproj.Proj(str(self.service.projection)),
              'image_format': 'png',
              'transparent': True
          }