ResponsiveImageStyle::addImageStyleMapping

public ResponsiveImageStyle::addImageStyleMapping($breakpoint_id, $multiplier, array $image_style_mapping)

public function addImageStyleMapping($breakpoint_id, $multiplier, array $image_style_mapping) {
  // If there is an existing mapping, overwrite it.
  foreach ($this->image_style_mappings as &$mapping) {
    if ($mapping['breakpoint_id'] === $breakpoint_id && $mapping['multiplier'] === $multiplier) {
      $mapping = array(
        'breakpoint_id' => $breakpoint_id,
        'multiplier' => $multiplier,
      ) + $image_style_mapping;
      $this->keyedImageStyleMappings = NULL;
      return $this;
    }
  }
  $this->image_style_mappings[] = array(
    'breakpoint_id' => $breakpoint_id,
    'multiplier' => $multiplier,
  ) + $image_style_mapping;
  $this->keyedImageStyleMappings = NULL;
  return $this;
}