https://help.eclipse.org/latest/topic/org.eclipse.jdt.doc.isv/reference/api/org/eclipse/jdt/core/compiler/CompilationParticipant.html
CompilationParticipant (Eclipse JDT API Specification)
declaration: package: org.eclipse.jdt.core.compiler, class: CompilationParticipant
eclipsejdtapispecification