com.atlassian.confluence.content
Interfaces 
Content
ContentEntityAdapter
ContentType
ContentTypeManager
CustomContentManager
Classes 
ContentProperties
ContentProperty
ContentQuery
ContentTypeModuleDescriptor
CustomContentEntityObject
CustomContentSearchExtractor
CustomContentSpaceRemovalListener
DefaultContentAdapter
DefaultContentTypeManager
DefaultCustomContentManager
UninstalledContentType
Enums 
CustomContentManager.SortField
CustomContentManager.SortOrder