com.atlassian.jira.config.properties
Interfaces 
APKeys
ApplicationProperties
SystemPropertyKeys
Classes 
APKeys.JiraIndexConfiguration
APKeys.JiraIndexConfiguration.Batch
APKeys.JiraIndexConfiguration.Interactive
APKeys.Languages
APKeys.TrustedApplications
ApplicationPropertiesImpl
LookAndFeelBean
LookAndFeelBean.DefaultColours
PropertiesManager