packages/basic-component-mixins/src/ShadowTemplateMixin.js
function shimTemplateStyles(template, tag) {
  window.WebComponents.ShadowCSS.shimStyling(template.content, tag);
}
function shimTemplateStyles(template, tag) {
  window.WebComponents.ShadowCSS.shimStyling(template.content, tag);
}
function shimTemplateStyles ( template , tag ) { window . WebComponents . ShadowCSS . shimStyling ( template . content , tag ) ; }
Invoke basic style shimming with ShadowCSS.
Invoke basic style shimming with ShadowCSS .