https://help.eclipse.org/latest/nftopic/org.eclipse.platform.doc.isv/reference/api/org/eclipse/e4/ui/css/core/dom/properties/css2/AbstractCSSPropertyBorderHandler.html
AbstractCSSPropertyBorderHandler (Eclipse Platform API Specification)
declaration: package: org.eclipse.e4.ui.css.core.dom.properties.css2, class: AbstractCSSPropertyBorderHandler
eclipse platformapispecification