org.eclipse.wst.jsdt.ui.text.java
Interfaces 
IInvocationContext
IJavaCompletionProposal
IJavaCompletionProposalComputer
IJavadocCompletionProcessor
IProblemLocation
IQuickAssistProcessor
IQuickFixProcessor
Classes 
AbstractProposalSorter
CompletionProposalCollector
CompletionProposalComparator
CompletionProposalLabelProvider
ContentAssistInvocationContext
JavaContentAssistInvocationContext